Dr. Michael D. Feit Profile

Dr. Michael D. Feit

Physicist at Lawrence Livermore National Lab

SPIE Involvement:

Author

Publications (96)

SPIE Journal Paper | 25 April 2019 Open Access

Subsurface mechanical damage correlations after grinding of various optical materials

Tayyab I. Suratwala, William A. Steele, Lana Wong, Gary Tham, Joel F. Destino, Philip E. Miller, Nathan J. Ray, Joseph Menapace, Eyal Feigenbaum, Nan Shen, Michael Feit

OE, Vol. 58, Issue 09, 092604, (April 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.9.092604

KEYWORDS: Abrasives, Etching, Crystals, Glasses, Magnetorheological finishing, Aluminum, Particles, Polishing, Silica, Silicon carbide

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Proceedings Article | 23 November 2015 Paper

Morphology of ejected debris from laser super-heated fused silica following exit surface laser-induced damage

Stavros Demos, Raluca Negres, Rajesh Raman, Michael Feit, Kenneth Manes, Alexander Rubenchik

Proceedings Volume 9632, 96320S (2015) https://doi.org/10.1117/12.2195501

KEYWORDS: Particles, Laser induced damage, Silica, Foam, Dielectrics, Temperature metrology, Pulsed laser operation, Optical fibers, Laser systems engineering, Liquids, Explosives, Scanning electron microscopy, Materials processing

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Proceedings Article | 31 October 2014 Paper

Modeling the material properties at the onset of damage initiation in bulk potassium dihydrogen phosphate crystals

Stavros Demos, Michael Feit, Guillaume Duchateau

Proceedings Volume 9237, 92370W (2014) https://doi.org/10.1117/12.2069673

KEYWORDS: Absorption, Laser damage threshold, Laser induced damage, Picosecond phenomena, Crystals, Performance modeling, Laser crystals, Potassium, Optical properties, Thermal modeling

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Proceedings Article | 31 October 2014 Open Access

Silica laser damage mechanisms, precursors, and their mitigation

J. Bude, P. Miller, N. Shen, T. Suratwala, T. Laurence, W. Steele, S. Baxamusa, L. Wong, W. Carr, D. Cross, M. Monticelli, M. Feit, G. Guss

Proceedings Volume 9237, 92370S (2014) https://doi.org/10.1117/12.2070017

KEYWORDS: Silica, Laser induced damage, Etching, Absorption, Laser damage threshold, Surface finishing, Atrial fibrillation, Glasses, Temperature metrology, National Ignition Facility

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Proceedings Article | 2 December 2013 Paper

Interaction of laser pulse with confined plasma during exit surface nanosecond laser damage

Alexander Rubenchik, Michael Feit, Stavros Demos

Proceedings Volume 8885, 88851D (2013) https://doi.org/10.1117/12.2030482

KEYWORDS: Plasma, Laser induced damage, Pulsed laser operation, Particles, Laser development, Absorption, Silica, Dielectrics, Visualization, Laser energy

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Proceedings Article | 14 November 2013 Paper

Comparison of material response in fused silica and KDP following exit surface laser- induced breakdown

Stavros Demos, Raluca Negres, Rajesh Raman, Alexander Rubenchik, Michael Feit

Proceedings Volume 8885, 88850W (2013) https://doi.org/10.1117/12.2030481

KEYWORDS: Silica, Particles, Laser induced damage, Materials processing, Laser systems engineering, Laser energy, Pulsed laser deposition, Laser beam diagnostics, Crystals, Plasma

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SPIE Journal Paper | 10 October 2012 Open Access

Thermal annealing of laser damage precursors on fused silica surfaces

Nan Shen, Philip Miller, Jeffrey Bude, Ted Laurence, Tayyab Suratwala, William Steele, Michael Feit, Lana Wong

OE, Vol. 51, Issue 12, 121817, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.12.121817

KEYWORDS: Annealing, Silica, Laser damage threshold, Laser induced damage, Surface finishing, Glasses, Optical damage, Absorption, Polishing, Luminescence

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Proceedings Article | 6 December 2010 Paper

Impact of substrate surface scratches on the laser damage resistance of multilayer coatings

S. Roger Qiu, Justin Wolfe, Anthony Monterrosa, William Steele, Nick Teslich, Michael Feit, Thomas Pistor, Christopher Stolz

Proceedings Volume 7842, 78421X (2010) https://doi.org/10.1117/12.867740

KEYWORDS: Multilayers, Laser induced damage, Resistance, Optical coatings, Laser damage threshold, Silica, Mirrors, Etching, Dielectrics, Surface finishing

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Proceedings Article | 2 December 2010 Paper

An assessment of molecular dynamic force fields for silica for use in simulating laser damage mitigation

Thomas Soules, George Gilmer, Manyalibo Matthews, James Stolken, Michael Feit

Proceedings Volume 7842, 78420P (2010) https://doi.org/10.1117/12.867741

KEYWORDS: Silica, Chemical species, Liquids, Glasses, Silicon, Optical simulations, Solids, Laser induced damage, Molecular lasers, Temperature metrology

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Proceedings Article | 1 December 2010 Paper

Densification and residual stress induced by CO2 laser-based mitigation of SiO2 surfaces

M. Feit, M. Matthews, T Soules, J. Stolken, R. Vignes, S. Yang, J. Cooke

Proceedings Volume 7842, 78420O (2010) https://doi.org/10.1117/12.867727

KEYWORDS: Silica, Carbon dioxide lasers, Laser induced damage, Carbon dioxide, Annealing, Glasses, Temperature metrology, Laser development, Solids, Optical properties

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Proceedings Article | 31 December 2009 Paper

Laser damage precursors in fused silica

P. Miller, T. Suratwala, J. Bude, T. Laurence, N. Shen, W. Steele, M. Feit, J. Menapace, L. Wong

Proceedings Volume 7504, 75040X (2009) https://doi.org/10.1117/12.836986

KEYWORDS: Laser induced damage, Silica, Polishing, Surface finishing, Etching, Laser damage threshold, Confocal microscopy, Cerium, Optical components, Luminescence

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Proceedings Article | 31 December 2009 Paper

High temperature thermographic measurements of laser heated silica

Selim Elhadj, Steven Yang, Manyalibo Matthews, Diane Cooke, Jeffrey Bude, Michael Johnson, Michael Feit, Vaughn Draggoo, Scott Bisson

Proceedings Volume 7504, 750419 (2009) https://doi.org/10.1117/12.836985

KEYWORDS: Temperature metrology, Silica, Infrared cameras, Cameras, Spinel, Sapphire, Laser induced fluorescence, Thermal effects, Black bodies, Calibration

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Proceedings Article | 31 December 2009 Paper

Modeling wet chemical etching of surface flaws on fused silica

M. Feit, T. Suratwala, L. Wong, W. Steele, P. Miller, J. Bude

Proceedings Volume 7504, 75040L (2009) https://doi.org/10.1117/12.836912

KEYWORDS: Etching, Laser induced damage, Silica, Carbon dioxide lasers, Wet etching, Fluid dynamics, Isotropic etching, Optical simulations, Diffusion, Carbon dioxide

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Proceedings Article | 31 December 2009 Paper

Ultrafast photoluminescence as a diagnostic for laser damage initiation

Ted Laurence, Jeff Bude, Nan Shen, Phillip Miller, William Steele, Gabe Guss, John Adams, Lana Wong, Michael Feit, Tayyab Suratwala

Proceedings Volume 7504, 750416 (2009) https://doi.org/10.1117/12.836923

KEYWORDS: Silica, Laser induced damage, Luminescence, Pulsed laser operation, Absorption, Carbon dioxide lasers, Laser damage threshold, Laser scattering, Confocal microscopy, Surface finishing

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Proceedings Article | 31 December 2009 Paper

Modeling of light intensification by conical pits within multilayer high reflector coatings

S. Roger Qiu, Justin Wolfe, Anthony Monterrosa, Michael Feit, Thomas Pistor, Christopher Stolz

Proceedings Volume 7504, 75040M (2009) https://doi.org/10.1117/12.836916

KEYWORDS: Multilayers, Coating, Silica, Laser induced damage, Computer simulations, Finite-difference time-domain method, Waveguides, Mirrors, High reflection coatings, Resistance

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Proceedings Article | 30 December 2008 Paper

Laser damage growth in fused silica with simultaneous 351nm and 1053nm irradiation

Mary Norton, Adra Carr, C. Wren Carr, Eugene Donohue, Michael Feit, William Hollingsworth, Zhi Liao, Raluca Negres, Alexander Rubenchik, P. Wegner

Proceedings Volume 7132, 71321H (2008) https://doi.org/10.1117/12.804432

KEYWORDS: Laser induced damage, Silica, Current controlled current source, Laser optics, Optical damage, High power lasers, Laser systems engineering, Laser irradiation, Laser damage threshold

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Proceedings Article | 30 December 2008 Paper

Using shaped pulses to probe energy deposition during laser-induced damage of SiO2 surfaces

C. Carr, D. Cross, M. Feit, J. Bude

Proceedings Volume 7132, 71321C (2008) https://doi.org/10.1117/12.804460

KEYWORDS: Laser induced damage, Silica, Thermal modeling, Diffusion, Current controlled current source, Near field, Thermal effects, Gold, Nanoparticles, Physics

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Proceedings Article | 20 December 2007 Paper

Comparison between S/1 and R/1 tests and damage density vs. fluence (Rho(Phi)) results for unconditioned and sub-nanosecond laser-conditioned KD2PO4 crystals

J. Adams, J. Jarboe, M. Feit, R. Hackel

Proceedings Volume 6720, 672014 (2007) https://doi.org/10.1117/12.752961

KEYWORDS: Picosecond phenomena, Crystals, Laser crystals, Eye, Laser beam diagnostics, Microscopes, Error analysis, Pulsed laser operation, Laser induced damage, Laser damage threshold

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Proceedings Article | 20 December 2007 Paper

Effect of random clustering on surface damage density estimates

Manyalibo Matthews, Michael Feit

Proceedings Volume 6720, 67201J (2007) https://doi.org/10.1117/12.752938

KEYWORDS: Silica, Laser damage threshold, Microscopy, Laser optics, Error analysis, Laser induced damage, Statistical analysis, Data modeling, Laser systems engineering, Bacteria

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Proceedings Article | 20 December 2007 Paper

Pump and probe damage testing for investigation of transient material modifications associated with laser damage in optical materials

R. Negres, M. Feit, P. DeMange, J. Bude, S. Demos

Proceedings Volume 6720, 672019 (2007) https://doi.org/10.1117/12.750091

KEYWORDS: Absorption, Silica, Laser induced damage, Laser beam diagnostics, Q switched lasers, Nd:YAG lasers, Pulsed laser operation, Helium neon lasers, Objectives, Dielectrics

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Proceedings Article | 18 December 2007 Paper

Does complex absorption behavior leading to conditioning and damage in KDP/DKDP reflect the electronic structure of initiators?

M. Feit, P. DeMange, R. Negres, A. Rubenchik, S. Demos

Proceedings Volume 6720, 672005 (2007) https://doi.org/10.1117/12.748444

KEYWORDS: Absorption, Laser damage threshold, Laser induced damage, Crystals, Electrons, Laser crystals, Photons, Frequency conversion, Databases, Laser energy

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Proceedings Article | 18 December 2007 Paper

Growth of laser damage in fused silica: diameter to depth ratio

Mary Norton, John Adams, C. Wren Carr, Eugene Donohue, Michael Feit, Richard Hackel, William Hollingsworth, Jeffrey Jarboe, Manyalibo Matthews, Alexander Rubenchik, Mary Spaeth

Proceedings Volume 6720, 67200H (2007) https://doi.org/10.1117/12.748441

KEYWORDS: Laser induced damage, Silica, Laser systems engineering, Scanning electron microscopy, Cameras, Microscopes, Optical microscopes, Beam shaping, CCD cameras, High power lasers

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Proceedings Article | 15 January 2007 Paper

Results of sub-nanosecond laser-conditioning of KD2PO4 crystals

J. Adams, J. Jarboe, C. Carr, M. Feit, R. Hackel, J. Halpin, J. Honig, L. Lane, R. Luthi, J. Peterson, D. Ravizza, F. Ravizza, A. Rubenchik, W. Sell, J. Vickers, T. Weiland, T. Wennberg, D. Willard, M. Yeoman

Proceedings Volume 6403, 64031M (2007) https://doi.org/10.1117/12.696086

KEYWORDS: Picosecond phenomena, Crystals, Laser crystals, Pulsed laser operation, Microscopes, Laser induced damage, Laser damage threshold, Laser systems engineering, Bulk lasers, Surface finishing

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Proceedings Article | 15 January 2007 Paper

Thermal imaging investigation of modified fused silica at surface damage sites for understanding the underlying mechanisms of damage growth

R. Negres, M. Burke, P. DeMange, S. Sutton, M. Feit, S. Demos

Proceedings Volume 6403, 640306 (2007) https://doi.org/10.1117/12.695476

KEYWORDS: Absorption, Laser induced damage, Luminescence, Thermography, Ultraviolet radiation, Silica, Temperature metrology, Continuous wave operation, Diffusion, Thermal modeling

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Proceedings Article | 15 January 2007 Paper

Importance of free surfaces for damage crater formation

M. Feit, A. Rubenchik

Proceedings Volume 6403, 64030A (2007) https://doi.org/10.1117/12.696343

KEYWORDS: Laser induced damage, Laser energy, Absorption, Reflection, Silica, Plasma, Distance measurement, Ultraviolet radiation, Laser damage threshold, Motion models

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Proceedings Article | 15 January 2007 Paper

Growth of laser damage on the input surface of SiO2 at 351 nm

Mary Norton, Eugene Donohue, Michael Feit, Richard Hackel, William Hollingsworth, Alexander Rubenchik, Mary Spaeth

Proceedings Volume 6403, 64030L (2007) https://doi.org/10.1117/12.696085

KEYWORDS: Laser induced damage, Silica, Laser systems engineering, Microscopes, Plasma, Laser optics, Photomicroscopy, Optical testing, Laser damage threshold, Beam shaping

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Proceedings Article | 7 February 2006 Paper

The distribution of subsurface damage in fused silica

P. Miller, T. Suratwala, L. Wong, M. Feit, J. Menapace, P. Davis, R. Steele

Proceedings Volume 5991, 599101 (2006) https://doi.org/10.1117/12.638821

KEYWORDS: Abrasives, Particles, Surface finishing, Polishing, Silica, Surface roughness, Magnetorheological finishing, Aluminum, Etching, Diamond

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Proceedings Article | 7 February 2006 Paper

Size-selection initiation model extended to include shape and random factors

John Trenholme, Michael Feit, Alexander Rubenchik

Proceedings Volume 5991, 59910X (2006) https://doi.org/10.1117/12.638834

KEYWORDS: Absorption, Diffusion, Data modeling, Convolution, Laser induced damage, Pulsed laser operation, Laser irradiation, Stochastic processes, Particles, Temperature metrology

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Proceedings Article | 7 February 2006 Paper

A summary of recent damage-initiation experiments on KDP crystals

C.W. Carr, M.D. Feit, A.M. Rubenchik, J.B. Trenholme, M.L. Spaeth

Proceedings Volume 5991, 59911Q (2006) https://doi.org/10.1117/12.638829

KEYWORDS: Crystals, Absorption, Laser induced damage, Gaussian pulse, Pulsed laser operation, Calibration, Laser crystals, Light scattering, Scatter measurement, Laser scattering

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Proceedings Article | 7 February 2006 Paper

Wavelength and pulselength dependence of laser conditioning and bulk damage in doubler-cut KH₂PO₄

J.J. Adams, J.R. Bruere, M. Bolourchi, C.W. Carr, M.D. Feit, R.P. Hackel, D.E. Hahn, J.A. Jarboe, L.A. Lane, R.L. Luthi, J.N. McElroy, A.M. Rubenchik, J.R. Stanley, W.D. Sell, J.L. Vickers, T.L. Weiland, D.A. Willard

Proceedings Volume 5991, 59911R (2006) https://doi.org/10.1117/12.638827

KEYWORDS: Crystals, Laser crystals, Picosecond phenomena, Excimer lasers, Bulk lasers, Digital imaging, Laser scattering, Excimers, Laser induced damage, Image processing

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Proceedings Article | 7 February 2006 Paper

Simple model of laser damage initiation and conditioning in frequency conversion crystals

M.D. Feit, A.M. Rubenchik, J.B. Trenholme

Proceedings Volume 5991, 59910W (2006) https://doi.org/10.1117/12.638830

KEYWORDS: Laser crystals, Crystals, Laser induced damage, Frequency conversion, Absorption, Laser damage threshold, Resistance, Plasma, Data modeling, Bulk lasers

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Proceedings Article | 7 February 2006 Paper

Growth of laser damage in SiO₂ under multiple wavelength irradiation

Mary Norton, Eugene Donohue, Michael Feit, Richard Hackel, William Hollingsworth, Alexander Rubenchik, Mary Spaeth

Proceedings Volume 5991, 599108 (2006) https://doi.org/10.1117/12.638833

KEYWORDS: Laser induced damage, Laser systems engineering, Silica, Laser damage threshold, CCD cameras, Optical components, Frequency converters, Cameras, Frequency conversion, Laser applications

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Proceedings Article | 21 February 2005 Paper

Growth of laser initiated damage in fused silica at 1053 nm

Mary Norton, Eugene Donohue, William Hollingsworth, Michael Feit, Alexander Rubenchik, Richard Hackel

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585930

KEYWORDS: Laser induced damage, Silica, Photomicroscopy, Cameras, Laser damage threshold, Laser applications, Plasma, Laser optics, Laser systems engineering, Polishing

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Proceedings Article | 21 February 2005 Paper

The nature of emission from optical breakdown induced by pulses of fs and ns duration

Christopher Carr, Michael Feit, Alexander Rubenchik, Paul DeMange, Sergei Kucheyev, Michael Shirk, Harry Radousky, Stavros Demos

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585925

KEYWORDS: Plasma, Laser induced fluorescence, Femtosecond phenomena, Pulsed laser operation, Chromium, Black bodies, Harmonic generation, Ionization, Time metrology, Second-harmonic generation

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Proceedings Article | 21 February 2005 Paper

Effect on scattering of complex morphology of DKDP bulk damage sites

Christopher Carr, Michael Feit, J. Muyco, Alexander Rubenchik

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585927

KEYWORDS: Scattering, Raman scattering, Laser scattering, Raman spectroscopy, Crystals, Laser induced damage, Scanning electron microscopy, Photomicroscopy, Laser crystals, Refractive index

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Proceedings Article | 21 February 2005 Paper

Pulse length dependence of laser conditioning and bulk damage in KD2PO4

John Adams, Timothy Weiland, Joel Stanley, Walter Sell, Ronald Luthi, James Vickers, Christopher Carr, Michael Feit, Alexander Rubenchik, Mary Spaeth, Richard Hackel

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585904

KEYWORDS: Picosecond phenomena, Crystals, Laser crystals, Pulsed laser operation, Calibration, Bulk lasers, YAG lasers, Excimer lasers, Laser induced damage, Laser optics

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Proceedings Article | 10 June 2004 Paper

Surface damage growth mitigation on KDP/DKDP optics using single-crystal diamond micromachining

Lawrence Hrubesh, John Adams, Michael Feit, Walter Sell, Joel Stanley, Eric Miller, Samuel Thompson, Pamela Whitman, Richard Hackel

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.523859

KEYWORDS: Crystals, Micromachining, Diamond, Laser induced damage, Autoregressive models, Laser crystals, Crystal optics, Microscopes, Singular optics, Pulsed laser operation

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Proceedings Article | 10 June 2004 Paper

Influence of subsurface cracks on laser-induced surface damage

Michael Feit, Alexander Rubenchik

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.523864

KEYWORDS: Laser induced damage, Absorption, Silica, Electrons, Polishing, Reflection, Particles, Surface finishing, Oxygen, Laser damage threshold

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Proceedings Article | 10 June 2004 Paper

Development of a process model for CO2 laser mitigation of damage growth in fused silica

Michael Feit, Alexander Rubenchik, Charles Boley, Mark Rotter

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.523867

KEYWORDS: Silica, Process modeling, Beam shaping, Carbon dioxide lasers, Gas lasers, Laser induced damage, Thermal modeling, Laser energy, Absorption, Optical simulations

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Proceedings Article | 10 June 2004 Paper

Implications of nanoabsorber initiators for damage probability curves, pulselength scaling, and laser conditioning

Michael Feit, Alexander Rubenchik

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.523862

KEYWORDS: Particles, Absorption, Laser damage threshold, Crystals, Pulsed laser operation, Laser induced damage, Surface finishing, Oxygen, Data modeling, Laser systems engineering

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Proceedings Article | 28 May 2004 Paper

NIF optical materials and fabrication technologies: an overview

John Campbell, Ruth Hawley-Fedder, Christopher Stolz, Joseph Menapace, Michael Borden, Pamela Whitman, June Yu, Michael Runkel, Michael Riley, Michael Feit, Richard Hackel

Proceedings Volume 5341, (2004) https://doi.org/10.1117/12.538471

KEYWORDS: National Ignition Facility, Optics manufacturing, Crystals, Optical coatings, Spatial frequencies, Glasses, Resistance, Polishing, Surface finishing, Wavefronts

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Proceedings Article | 3 July 2003 Paper

Ribbon fiber with multiple antiguided phase-locked gain cores

Raymond Beach, Michael Feit, Scott Mitchell, Kurt Cutter, Jay Dawson, Stephen Payne, Richard Mead, Joseph Hayden, David Krashkevich, David Alunni

Proceedings Volume 4974, (2003) https://doi.org/10.1117/12.478275

KEYWORDS: Waveguides, Glasses, Refractive index, Structured optical fibers, Cladding, Near field, Fiber lasers, Silica, Prototyping, Mode locking

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Proceedings Article | 30 May 2003 Paper

Analysis of raster scanning damage and conditioning experiments

Michael Feit, Alexander Rubenchik

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472048

KEYWORDS: Raster graphics, Gaussian beams, National Ignition Facility, Optical testing, Silica, Laser induced damage, Laser optics, Statistical analysis, Chlorine, Atrial fibrillation

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Proceedings Article | 30 May 2003 Paper

Mechanisms of CO2 laser mitigation of laser damage growth in fused silica

Michael Feit, Alexander Rubenchik

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472049

KEYWORDS: Silica, Carbon dioxide lasers, Laser induced damage, Laser ablation, Thermal effects, Glasses, Pulsed laser operation, Plasma etching, Resistance, Laser optics

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Proceedings Article | 9 April 2002 Paper

Methods for mitigating surface damage growth in NIF final optics

Lawrence Hrubesh, Mary Norton, William Molander, Eugene Donohue, Stephen Maricle, Bernie Penetrante, Raymond Brusasco, Walter Grundler, Jim Butler, Jeff Carr, R. Hill, Leslie Summers, Michael Feit, Alexander Rubenchik, Michael Key, Paul Wegner, Alan Burnham, Lloyd Hackel, Mark Kozlowski

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461723

KEYWORDS: Silica, Carbon dioxide lasers, Etching, National Ignition Facility, Laser induced damage, Plasma, Carbon dioxide, Wet etching, Fluorine, Contamination

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Proceedings Article | 9 April 2002 Paper

Engineered defects for investigation of laser-induced damage of fused silica at 355 nm

Alex Hamza, Wigbert Siekhaus, Alexander Rubenchik, Michael Feit, Lloyd Chase, M. Savina, Michael Pellin, Ian Hutcheon, Mike Nostrand, Michael Runkel, Bill Choi, Michael Staggs, Michael Fluss

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461716

KEYWORDS: Gold, Particles, Silica, Laser induced damage, Laser damage threshold, Nanoparticles, Microscopy, Coating, Atomic force microscopy, Pulsed laser operation

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Proceedings Article | 9 April 2002 Paper

Improving 351-nm damage performance of large-aperture fused silica and DKDP optics

Alan Burnham, Lloyd Hackel, Paul Wegner, Thomas Parham, Lawrence Hrubesh, Bernie Penetrante, Pamela Whitman, Stavros Demos, Joseph Menapace, Michael Runkel, Michael Fluss, Michael Feit, Michael Key, Thomas Biesiada

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461712

KEYWORDS: Silica, Surface finishing, National Ignition Facility, Polishing, Crystals, Laser induced damage, Absorption, Etching, Light scattering, UV optics

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Proceedings Article | 9 April 2002 Paper

Time-resolved spectroscopic investigation of emission observed during damage in the bulk of fused silica and DKDP crystals

Christopher Carr, Harry Radousky, Michael Staggs, Alexander Rubenchik, Michael Feit, Stavros Demos

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461714

KEYWORDS: Silica, Mirrors, Spectroscopy, Black bodies, Pulsed laser operation, Crystals, Time resolved spectroscopy, Laser induced damage, Plasma, Off axis mirrors

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Proceedings Article | 9 April 2002 Paper

Initiation, growth, and mitigation of UV-laser-induced damage in fused silica

Alexander Rubenchik, Michael Feit

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461680

KEYWORDS: Absorption, Silica, Plasma, Electrons, Polishing, Laser induced damage, Ionization, Nanoparticles, Particles, Glasses

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Proceedings Article | 9 April 2002 Paper

Structural modifications in fused silica due to laser-damage-induced shock compression

Alison Kubota, Maria-Jose Caturla, Lilian Davila, James Stolken, Babak Sadigh, A. Quong, Alexander Rubenchik, Michael Feit

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461717

KEYWORDS: Silica, Chlorine, Particles, Silicon, Chemical species, Acoustics, Laser induced damage, Ultraviolet radiation, Wave propagation, High power lasers

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SPIE Journal Paper | 1 July 2001 Open Access

Influence of pulse duration on ultrashort laser pulse ablation of biological tissues

Beop-Min Kim, Michael Feit, Alexander Rubenchik, E. Joslin, Peter Celliers, Juergen Eichler, Luiz Da Silva

JBO, Vol. 6, Issue 03, (July 2001) https://doi.org/10.1117/12.10.1117/1.1381561

KEYWORDS: Picosecond phenomena, Tissues, Laser ablation, Electrons, Ultrafast phenomena, Plasmas, Absorption, Beam splitters, Ionization, Natural surfaces

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Proceedings Article | 12 April 2001 Paper

Growth of laser-initiated damage in fused silica at 351 nm

Mary Norton, Lawrence Hrubesh, Zhouling Wu, Eugene Donohue, Michael Feit, Mark Kozlowski, David Milam, Kurt Neeb, William Molander, Alexander Rubenchik, Walter Sell, Paul Wegner

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425055

KEYWORDS: Laser induced damage, Silica, UV optics, Ultraviolet radiation, Sol-gels, Antireflective coatings, Laser marking

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Proceedings Article | 12 April 2001 Paper

Results of pulse-scaling experiments on rapid-growth DKDP triplers using the Optical Sciences Laser at 351 nm

Michael Runkel, Alan Burnham, David Milam, Walter Sell, Michael Feit, Alexander Rubenchik

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425024

KEYWORDS: Laser optics, Photometry, National Ignition Facility, Crystals, Optical microcavities, Microscopes, Inspection, Calibration, Chlorine, Laser crystals

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Proceedings Article | 12 April 2001 Paper

Scaling relations for laser damage initiation craters

Michael Feit, Lawrence Hrubesh, Alexander Rubenchik, Jen Nan Wong

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425053

KEYWORDS: Laser induced damage, Silica, National Ignition Facility, Glasses, Absorption, Air contamination, Laser energy, Ultraviolet radiation, Polishing, Liquids

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Proceedings Article | 12 April 2001 Paper

Analysis of bulk DKDP damage distribution, obscuration, and pulse-length dependence

Michael Feit, Alexander Rubenchik, Michael Runkel

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425052

KEYWORDS: Particles, Absorption, Diffusion, Laser damage threshold, Spherical lenses, Crystals, Laser induced damage, Pulsed laser operation, Refractive index, National Ignition Facility

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Proceedings Article | 13 June 2000 Paper

Analysis of stress waves generated in water using ultrashort laser pulses

Beop-Min Kim, Michael Feit, Alexander Rubenchik, Aleksey Komashko, Ernest Reidt, Juergen Eichler, Luiz Da Silva

Proceedings Volume 3914, (2000) https://doi.org/10.1117/12.388043

KEYWORDS: Ultrafast phenomena, Laser ablation, Mach-Zehnder interferometers, Spherical lenses, Water, Acoustics, Energy transfer, Plasma generation, Plasma, Dye lasers

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Proceedings Article | 23 May 2000 Paper

Femtosecond laser materials processing

Paul Banks, Brent Stuart, Aleksey Komashko, Michael Feit, Alexander Rubenchik, Michael Perry

Proceedings Volume 3934, (2000) https://doi.org/10.1117/12.386356

KEYWORDS: Femtosecond phenomena, Copper, Picosecond phenomena, Laser ablation, Aluminum, Plasma, Metals, Materials processing, Explosives, Laser energy

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Proceedings Article | 23 March 2000 Paper

Modeling of long-term behavior of ablation plumes produced with ultrashort laser pulses

Aleksey Komashko, Michael Feit, Alexander Rubenchik

Proceedings Volume 3935, (2000) https://doi.org/10.1117/12.380796

KEYWORDS: Laser ablation, Pulsed laser operation, 3D modeling, Ultrafast phenomena, Clouds, Optical simulations, Laser energy, Absorption, Laser packaging, Aluminum

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Proceedings Article | 6 August 1999 Paper

Propagation modeling for multimode photonics

Richard Ratowsky, Bedros Afeyan, Jeffrey Kallman, Michael Feit

Proceedings Volume 3625, (1999) https://doi.org/10.1117/12.356869

KEYWORDS: Waveguides, Wave propagation, Diffraction, Geometrical optics, Ray tracing, Radio propagation, Beam propagation method, Refractive index, Photonics, Systems modeling

Proceedings Article | 23 July 1999 Paper

Modeling of laser knife-edge and pinhole experiments

Charles Boley, Kent Estabrook, Jerome Auerbach, Michael Feit, Alexander Rubenchik

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354166

KEYWORDS: Plasma, Tantalum, Iron, Spatial filters, Wavefronts, Laser beam diagnostics, Beam propagation method, Diamond, Wave propagation, Phase shifts

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Proceedings Article | 23 July 1999 Paper

Thin film contamination effects on laser-induced damage of fused silica surfaces at 355 nm

Francois Genin, Alexander Rubenchik, Alan Burnham, Michael Feit, J. Yoshiyama, Anne Fornier, C. Cordillot, Daniel Schirmann

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354235

KEYWORDS: Silica, Contamination, Metals, Copper, Absorption, Thin films, Gold, Aluminum, Laser damage threshold, Laser induced damage

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Proceedings Article | 23 July 1999 Paper

Statistical description of laser damage initiation in NIF and LMJ Optics at 355 nm

Michael Feit, Francois Genin, Alexander Rubenchik, Lynn Sheehan, Sheldon Schwartz, Mark Kozlowski, Jean DiJon, Pierre Garrec, Jean Hue

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354232

KEYWORDS: National Ignition Facility, Laser induced damage, Laser damage threshold, Silica, Statistical analysis, Glasses, Polishing, Gaussian beams, Raster graphics, Data modeling

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Proceedings Article | 7 April 1999 Paper

Laser modulated scattering as a nondestructive evaluation tool for optical surfaces and thin film coatings

Zhouling Wu, Michael Feit, Mark Kozlowski, Alexander Rubenchik, Lynn Sheehan

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344422

KEYWORDS: Laser scattering, Scattering, Laser beam diagnostics, Absorption, Modulation, Laser induced damage, Nondestructive evaluation, Signal detection, Optical coatings, Surface finishing

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Proceedings Article | 7 April 1999 Paper

Current 3-omega large optic test procedures and data analysis for the quality assurance of National Ignition Facility optics

Sheldon Schwartz, Michael Feit, Mark Kozlowski, Ron Mouser

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344417

KEYWORDS: National Ignition Facility, Data analysis, Raster graphics, Optical testing, Data modeling, Laser induced damage, Metrology, Photomicroscopy, Gaussian beams, Resistance

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Proceedings Article | 7 April 1999 Paper

Single-beam photothermal microscopy: a new diagnostic tool for optical materials

Zhouling Wu, Michael Feit, Mark Kozlowski, Jean-Yves Natoli, Alexander Rubenchik, Lynn Sheehan, Ming Yan

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344423

KEYWORDS: Laser scattering, Scattering, Laser beam diagnostics, Laser induced damage, Signal detection, Microscopy, Modulation, Spatial resolution, Defect detection, Sensors

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Proceedings Article | 7 April 1999 Paper

Extrapolation of damage test data to predict performance of large-area NIF optics at 355 nm

Michael Feit, Alexander Rubenchik, Mark Kozlowski, Francois Genin, Sheldon Schwartz, Lynn Sheehan

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344413

KEYWORDS: National Ignition Facility, Laser induced damage, Statistical analysis, Laser damage threshold, Gaussian beams, Silica, Beam shaping, Raster graphics, Analytical research, Polishing

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Proceedings Article | 18 May 1998 Paper

Plasma luminescence feedback control system for precise ultrashort pulse laser tissue ablation

Beop-Min Kim, Michael Feit, Alexander Rubenchik, David Gold, Christopher Darrow, John Marion, Luiz Da Silva

Proceedings Volume 3255, (1998) https://doi.org/10.1117/12.308212

KEYWORDS: Luminescence, Bone, Spinal cord, Plasma, Tissues, Laser ablation, Ultrafast phenomena, Pulsed laser operation, Signal detection, Feedback control

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Proceedings Article | 13 May 1998 Paper

Ultrashort-pulse laser ablation of biological tissue

Beop-Min Kim, Michael Feit, Alexander Rubenchik, David Gold, Brent Stuart, Luiz Da Silva

Proceedings Volume 3254, (1998) https://doi.org/10.1117/12.308165

KEYWORDS: Picosecond phenomena, Laser ablation, Plasma, Laser tissue interaction, Tissues, Ultrafast phenomena, Wave propagation, Pulsed laser operation, Teeth, Ionization

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Proceedings Article | 20 April 1998 Paper

Thin film contamination effects on laser-induced damage of fused silica surfaces at 355 nm

Anne Fornier, C. Cordillot, D. Schirman, Francois Genin, Alan Burnham, Pamela Whitman, Michael Feit, Alexander Rubenchik, J. Yoshiyama

Proceedings Volume 3244, (1998) https://doi.org/10.1117/12.307038

KEYWORDS: Thin films, Contamination, Silica, Laser induced damage, Laser damage threshold, Sputter deposition, Optical components, Nd:YAG lasers, Optical microscopy, Scanning electron microscopy

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Proceedings Article | 20 April 1998 Paper

Modeling of laser-induced surface cracks in silica at 355 nm

Michael Feit, Jack Campbell, Douglas Faux, Francois Genin, Mark Kozlowski, Alexander Rubenchik, Robert Riddle, Alberto Salleo, J. Yoshiyama

Proceedings Volume 3244, (1998) https://doi.org/10.1117/12.307035

KEYWORDS: Silica, Absorption, Laser energy, Nanoparticles, Optical simulations

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Proceedings Article | 20 April 1998 Paper

Pulse-shape and pulse-length scaling of ns pulse laser damage threshold due to rate limiting by thermal conduction

Michael Feit, Alexander Rubenchik, Alberto Salleo, David Eimerl

Proceedings Volume 3244, (1998) https://doi.org/10.1117/12.306987

KEYWORDS: Laser damage threshold

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Proceedings Article | 8 December 1997 Paper

Development of long-lifetime low-contamination beam dumps for NIF

Mary Norton, James Murray, Charles Boley, David Milam, Walter Sell, Michael Feit, Alexander Rubenchik

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294302

KEYWORDS: National Ignition Facility, Laser ablation, Glasses, Reflection, Laser damage threshold, Spatial filters, Metals, Tantalum, Optical amplifiers, Tungsten

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Proceedings Article | 8 December 1997 Paper

Laser intensity modulation by nonabsorbing defects

Michael Feit, Alexander Rubenchik

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294285

KEYWORDS: Refractive index, Modulation, Spherical lenses, Optical spheres, Laser induced damage, Lenses, Phase shifts, Glasses, Microlens, Silica

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Proceedings Article | 8 December 1997 Paper

Surface-contamination-initiated laser damage

Michael Feit, Alexander Rubenchik, Douglas Faux, Robert Riddle, Arthur Shapiro, David Eder, Bernie Penetrante, David Milam, Francois Genin, Mark Kozlowski

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294335

KEYWORDS: Particles, Plasma, Laser induced damage, Absorption, Aluminum, Diffraction, Atmospheric particles, Ionization, Contamination, Plasma generation

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Proceedings Article | 8 December 1997 Paper

Spatial filter issues

James Murray, Kent Estabrook, David Milam, Walter Sell, Bruno Van Wonterghem, Michael Feit, Alexander Rubenchik

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294305

KEYWORDS: Spatial filters, National Ignition Facility, Plasma, Diagnostics, Near field, Distortion, Electrons, Interferometry, Pulsed laser operation, Interferometers

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Proceedings Article | 13 May 1997 Paper

Modeling of laser damage initiated by surface contamination

Michael Feit, Alexander Rubenchik, Douglas Faux, Robert Riddle, Arthur Shapiro, David Eder, Bernie Penetrante, David Milam, Francois Genin, Mark Kozlowski

Proceedings Volume 2966, (1997) https://doi.org/10.1117/12.274234

KEYWORDS: Particles, Plasma, Laser induced damage, Absorption, Diffraction, Contamination, Atmospheric particles, Ionization, Aluminum, Atmospheric propagation

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We are engaged in a comprehensive effort to understand and model the initiation and growth of laser damage initiated by surface contaminants. This includes, for example, the initial absorption by the contaminant, heating and plasma generation, pressure and thermal loading of the transparent substrate, and subsequent shockwave propagation, 'splashing' of molten material and possible spallation, optical propagation and scattering, and treatment of material fracture. The integration use of large radiation hydrodynamics codes, optical propagation codes and material strength codes enables a comprehensive view of the damage process. On the entrance optical surface, small particles can ablate nearly completely. In this case, only relatively weak shockwaves are launched into the substrate, but some particulate materials may be left on the surface to act as a diffraction mask and cause further absorption. DIffraction by wavelength scale scattering centers can lead to significant intensity modulation. Larger particles will not be completely vaporized. The shockwave generated in this case is larger and can lead to spallation of contaminant material which then may be deposited in the substrate. A gaseous atmosphere can lead to radiation trapping with concomitant increases in temperature and pressure near the surface. In addition, supersonic ionization waves in air may be generated which greatly extend the plasma plume spatially and temporally. Contaminants on the exit optical surface behave differently. They tend to heat and pop off completely in which case significant damage may not occur. Since plasma formed at the interface of the optic and absorbing particle is confined, much stronger pressures are generated in this case. Imaging of contaminants resulting in 'writing' a diffraction pattern on the exit surface due to contamination on the entrance surface has been observed experimentally and predicted theoretically. Such imprinted damage regions can seed damage from subsequent pulses.

Proceedings Article | 13 May 1997 Paper

Laser intensity modulation by nonabsorbing defects

Michael Feit, Alexander Rubenchik

Proceedings Volume 2966, (1997) https://doi.org/10.1117/12.274235

KEYWORDS: Refractive index, Spherical lenses, Modulation, Lenses, Microlens, Optical spheres, Laser induced damage, Phase shifts, Glasses, Geometrical optics

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Proceedings Article | 27 May 1996 Paper

Ultrashort-pulse optical damage

Brent Stuart, Michael Feit, Steve Herman, Alexander Rubenchik, Bruce Shore, Michael Perry

Proceedings Volume 2714, (1996) https://doi.org/10.1117/12.240404

KEYWORDS: Electrons, Laser damage threshold, Dielectrics, Picosecond phenomena, Gold, Ionization, Plasma, Diffraction gratings, Multilayers, Pulsed laser operation

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Proceedings Article | 17 May 1996 Paper

Applications of ultrashort pulse lasers for hard tissue surgery

Joseph Neev, William Carrasco, William Armstrong, Luiz Da Silva, Michael Feit, Dennis Matthews, Michael Perry, Alexander Rubenchik, Brent Stuart

Proceedings Volume 2671, (1996) https://doi.org/10.1117/12.239993

KEYWORDS: Laser ablation, Laser tissue interaction, Pulsed laser operation, Laser dentistry, Laser applications, Bone, Natural surfaces, Tissues, Ultrafast phenomena, Laser drilling

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Proceedings Article | 7 May 1996 Paper

Comparison of soft and hard tissue ablation with sub-ps and ns pulse lasers

Luiz Da Silva, Brent Stuart, Peter Celliers, T. Chang, Michael Feit, Michael Glinsky, Nicholas Heredia, Steve Herman, Stephen Lane, Richard London, Dennis Matthews, Joseph Neev, Michael Perry, Alexander Rubenchik

Proceedings Volume 2681, (1996) https://doi.org/10.1117/12.239573

KEYWORDS: Laser ablation, Picosecond phenomena, Pulsed laser operation, Laser tissue interaction, Tissues, Plasma, Laser dentistry, Collagen, Ultrafast phenomena, Temperature metrology

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Proceedings Article | 7 May 1996 Paper

Computational modeling of ultrashort-pulse ablation of enamel

Richard London, David Bailey, David Young, W. Alley, Michael Feit, Alexander Rubenchik, Joseph Neev

Proceedings Volume 2681, (1996) https://doi.org/10.1117/12.239580

KEYWORDS: Absorption, Laser ablation, Teeth, Tissues, Optical simulations, Laser tissue interaction, Plasma, Motion models, Computer simulations, Solids

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