Dr. Murray K. Reed Profile

Dr. Murray K. Reed

CEO at QLM Technology Ltd

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 12 September 2021 Presentation

Single photon infrared lidar imagers for long range, continuous and autonomous methane monitoring

Murray Reed

Proceedings Volume 11856, 118560C (2021) https://doi.org/10.1117/12.2598862

KEYWORDS: Sensors, Methane, LIDAR, Single photon, Semiconductor lasers, Infrared radiation, Infrared photography, Infrared imaging, Imaging systems, Modulation

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Proceedings Article | 9 March 2021 Open Access

Single-photon LiDAR gas imagers for continuous monitoring of industrial greenhouse gases

Murray Reed

Proceedings Volume 11714, 1171404 (2021) https://doi.org/10.1117/12.2593028

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Proceedings Article | 4 October 2020 Presentation

Single-photon LiDAR gas imagers for continuous monitoring of industrial methane emissions

Murray Reed, Xiao Ai, James Titchener, Doug Millington-Smith, Alex Dunning

Proceedings Volume 11579, 115790C (2020) https://doi.org/10.1117/12.2584088

KEYWORDS: Methane, Imaging systems, LIDAR, Cameras, Infrared radiation, Infrared imaging, Infrared detectors, Infrared cameras, Temperature metrology, Shortwaves

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Proceedings Article | 13 March 2015 Paper

A high-performance passband-agile hyperspectral imager using a large aperture acousto-optic tuneable filter

Christopher Pannell, Jon Ward, Elliot Wachman, Bill Zhang, Murray Reed

Proceedings Volume 9369, 936906 (2015) https://doi.org/10.1117/12.2076468

KEYWORDS: Acoustics, Transducers, Acousto-optics, Imaging systems, Apodization, Electrodes, Diffraction, Microscopes, Hyperspectral imaging, Metals

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Proceedings Article | 13 March 2015 Paper

The spatially heterodyned spectrometer: A for high resolution Raman spectroscopy?

Christopher Pannell, Bill Zhang, Murray Reed

Proceedings Volume 9369, 936903 (2015) https://doi.org/10.1117/12.2076462

KEYWORDS: Spectroscopy, Fourier transforms, Charge-coupled devices, Raman spectroscopy, Spectral resolution, Spatial frequencies, Prototyping, Prisms, Solids, Collimation

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SPIE Journal Paper | 9 May 2014 Open Access

Simultaneous imaging of cellular morphology and multiple biomarkers using an acousto-optic tunable filter–based bright field microscope

Elliot Wachman, Stanley Geyer, Joel Recht, Jon Ward, Bill Zhang, Murray Reed, Christopher Pannell

JBO, Vol. 19, Issue 05, 056006, (May 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.5.056006

KEYWORDS: Electrodes, Transducers, Acoustics, Microscopes, Acousto-optics, Image quality, Imaging systems, Tunable filters, Multispectral imaging, Crystals

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Proceedings Article | 13 February 2008 Paper

High-brightness line generators and fiber-coupled sources based on low-smile laser diode arrays

J. Watson, D. Schleuning, P. Lavikko, T. Alander, D. Lee, P. Lovato, H. Winhold, M. Griffin, S. Tolman, P. Liang, T. Hasenberg, M. Reed

Proceedings Volume 6876, 68760V (2008) https://doi.org/10.1117/12.765472

KEYWORDS: Fiber couplers, Semiconductor lasers, Indium, Fiber lasers, Polarization, Cameras, Materials processing, Free space optics, Laser development, Reliability

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Proceedings Article | 13 February 2008 Paper

8xxnm kW conduction cooled QCW diode arrays with both electrically conductive and insulation submounts

Jihua Du, Hailong Zhou, David Schleuning, Vivek Agrawal, John Morales, Thomas Hasenberg, Murray Reed

Proceedings Volume 6876, 687605 (2008) https://doi.org/10.1117/12.764230

KEYWORDS: Diodes, Temperature metrology, Semiconductor lasers, Dielectrics, Solid state lasers, Nd:YAG lasers, Reliability, Continuous wave operation, Optical pumping, Thermal modeling

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Proceedings Article | 19 February 2007 Paper

Power-scaling of optically pumped semiconductor lasers

Lukas Hunziker, Qi-Ze Shu, Dominik Bauer, Chris Ihli, Guido Mahnke, Maxence Rebut, Juan Chilla, Andrea Caprara, Hailong Zhou, Eli Weiss, Murray Reed

Proceedings Volume 6451, 64510A (2007) https://doi.org/10.1117/12.710243

KEYWORDS: Semiconductor lasers, Mirrors, Transmission electron microscopy, Resonators, Optical pumping, Solid state lasers, Heatsinks, Diodes, Lithium, Amplifiers

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Proceedings Article | 19 February 2007 Paper

Recent advances in optically pumped semiconductor lasers

Juan Chilla, Qi-Ze Shu, Hailong Zhou, Eli Weiss, Murray Reed, Luis Spinelli

Proceedings Volume 6451, 645109 (2007) https://doi.org/10.1117/12.705907

KEYWORDS: Semiconductor lasers, Solid state lasers, Optical pumping, Laser applications, Mirrors, Semiconductors, Fiber lasers, High power lasers, Semiconductor materials, Vertical cavity surface emitting lasers

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Proceedings Article | 7 February 2007 Paper

Robust hard-solder packaging of conduction cooled laser diode bars

David Schleuning, Mike Griffin, Philip James, John McNulty, Dan Mendoza, John Morales, David Nabors, Mike Peters, Hailong Zhou, Murray Reed

Proceedings Volume 6456, 645604 (2007) https://doi.org/10.1117/12.701292

KEYWORDS: Packaging, Reliability, Finite element methods, Indium, Data modeling, Semiconductor lasers, Diodes, Thermal modeling, Temperature metrology

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Proceedings Article | 23 February 2006 Paper

Polarization-maintaining picosecond oscillator based on quantum dot SESAM

Paul Crittenden, Andrei Starodumov, Murray Reed

Proceedings Volume 6102, 610219 (2006) https://doi.org/10.1117/12.660317

KEYWORDS: Mode locking, Phase modulation, Picosecond phenomena, Polarization, Fiber lasers, Pulsed laser operation, Fiber Bragg gratings, Laser damage threshold, Quantum wells, Quantum dots

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Proceedings Article | 15 February 2006 Paper

High-efficiency and high-reliability 9xx-nm bars and fiber-coupled devices at Coherent

Hailong Zhou, Keith Kennedy, Eli Weiss, Jun Li, Serguei Anikitchev, Patrick Reichert, Jihua Du, David Schleuning, David Nabors, Murray Reed, Mika Toivonen, Sami Lehkonen, Jouko Haapamaa

Proceedings Volume 6104, 610406 (2006) https://doi.org/10.1117/12.644983

KEYWORDS: Laser phosphor displays, Reliability, Diodes, Semiconductor lasers, Thermal effects, Temperature metrology, Mirrors, Power supplies, Manufacturing

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Proceedings Article | 24 May 2005 Paper

Power-limiting mechanisms in VECSELs

R. Bedford, M. Kolesik, J. Chilla, M. Reed, T. Nelson, J. Moloney

Proceedings Volume 5814, (2005) https://doi.org/10.1117/12.607428

KEYWORDS: Mirrors, Semiconductors, Quantum wells, Reflectivity, Luminescence, Surface roughness, Semiconductor lasers, Vertical cavity surface emitting lasers, Disk lasers, Scattering

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Proceedings Article | 10 April 2005 Paper

Blue and green optically pumped semiconductor lasers for display

Juan Chilla, Hailong Zhou, Eli Weiss, Andrea Caprara, Qi-Ze Shou, Sergei Govorkov, Murray Reed, Luis Spinelli

Proceedings Volume 5740, (2005) https://doi.org/10.1117/12.598301

KEYWORDS: Semiconductor lasers, Lamps, RGB color model, Laser applications, Light sources, Diodes, Prototyping, Modulation, Fiber lasers, Laser marking

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Proceedings Article | 8 July 2004 Paper

High-power optically pumped semiconductor lasers

Juan Chilla, Stuart Butterworth, Alexander Zeitschel, John Charles, Andrea Caprara, Murray Reed, Luis Spinelli

Proceedings Volume 5332, (2004) https://doi.org/10.1117/12.549003

KEYWORDS: Semiconductor lasers, Optical pumping, High power lasers, Semiconductors, Mirrors, Vertical cavity surface emitting lasers, Quantum wells, Semiconductor materials, Diodes

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Proceedings Article | 23 May 2000 Paper

Compact diode-pumped solid state ultrafast oscillators

Murray Reed

Proceedings Volume 3934, (2000) https://doi.org/10.1117/12.386354

KEYWORDS: Ultrafast lasers, Oscillators, Diodes, Ultrafast phenomena, Semiconductor lasers, Fiber lasers, Reliability, Neodymium, Solid state physics, Mirrors

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Proceedings Article | 23 May 2000 Paper

Laser material processing with a 100-kHz 5-uJ ultrafast laser

Michael Armas, Murray Reed

Proceedings Volume 3934, (2000) https://doi.org/10.1117/12.386357

KEYWORDS: Amplifiers, Raster graphics, Ultrafast lasers, Laser processing, Ultrafast phenomena, Oscillators, Materials processing, Lasers, Aluminum, Optical lithography

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Proceedings Article | 4 June 1999 Paper

Vitesse: a compact diode-pumped Ti:sapphire ultrafast oscillator

Michael Steiner-Shepard, Xuren Huang, Murray Reed

Proceedings Volume 3616, (1999) https://doi.org/10.1117/12.351826

KEYWORDS: Ultrafast phenomena, Oscillators, Ultrafast lasers, Head, Laser applications, Reliability, Semiconductor lasers, Laser development, Continuous wave operation, Harmonic generation

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Proceedings Article | 1 July 1991 Paper

Second-harmonic generation of mode-locked Nd:YAG and Nd:YLF lasers using LiB₃O₅

Murray Reed, Jacek Tyminski, William Bischel

Proceedings Volume 1410, (1991) https://doi.org/10.1117/12.43606

KEYWORDS: Nd:YAG lasers, Crystals, Second-harmonic generation, Neodymium lasers, Laser crystals, High power lasers, Harmonic generation, Continuous wave operation, Mode locking, Solid state lasers

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Proceedings Article | 1 August 1990 Paper

Nd:glass slab laser for x-ray lithography

Murray Reed, Robert Byer

Proceedings Volume 1277, (1990) https://doi.org/10.1117/12.20573

KEYWORDS: Plasmas, X-ray lithography, Photomasks, X-rays, Lithography, Neodymium glass lasers, Laser resonators, Q switched lasers, Mode locking, X-ray detectors

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A Nd:Glass laser has been used to generate laser produced plasmas (LLP). The plasma emission in the keV range useful for X-ray lithography has been measured. Lithography with sub-micron linewidths has been demonstrated with a thin absorbing mask. The Nd:Glass slab laser is operated in a Q-switched one-dimensional unstable resonator. The resulting beam quality is a few times diffraction limited and is focused to an area less than the lO cm2 in our vacuum chamber. We have operated at 5 J up to 4 Hz repetition rate without any degradation of the laser output. Injection mode locking of the Nd:Glass laser with 0.7 ns pulses increases the intensity of the Q-switched laser output by about a factor of 10 and allows us to achieve a total integrated pulse length of less than 10 ns. Optical damage limits the laser intensity. The damage threshold for injection mode locked pulses focused into a Nd:Glass slab outside the laser cavity is about 20 J/cm2. However, we have observed another damage mechanism at lower intensities in Nd:Glass slabs in use in the laser head. Brown discoloration occurs in filaments along the laser beam path and we believe solarization with the help of self-focusing and the ultra- violet flashlamp radiation may be occuring. We are still investigating this phenomenon but at present it is limiting the laser output to only 2 J per pulse. The focused laser intensity is 2.1013 W/cm2 on a solid copper target in our vacuum chamber. The plasma emission in the keV X-ray range has been measured through a variety of thin film X-ray filters with a Hamamatsu micro-channel plate detector. Using the published values for the detector quantum efficiency, the micro-channel plate gain, and the filter's transmission spectra, we estimate that the conversion efficiency in the plasma from laser radiation to soft X-rays of energy greater than 0.5 keV is around 2%. We have performed single-level demonstration exposures of PNMA resist through a 10 im thick aluminised Kapton debris shield and a 4 im thick Boron Nitride X-ray mask supplied by Piero Pianetta the the Stanford Synchroton Research Laboratory. The 1.0 pm linewidth gold absorber patterns on the mask are accurately reproduced in the resist. The PMMA resist exposure rate at a 5 cm working distance from the plasma has been measured as 0.2 micron per lO J of total laser energy so we obtain a single layer exposure in about 30 minutes. The potential for improvement is enormous. The X-ray signal measured through the mask increases exponentially with the laser energy on target so increasing the focused intensity will reduce exposure rates dramatically. Available improvements in higher average power lasers and sensitised resists both offer an order of magnitude improvement over this system . These results indicate excellent potential for commercial LPP X-ray lithography.