Prof. Ewan M. Wright Profile

Prof. Ewan M. Wright

Professor of Physics at Wyant College of Optical Sciences

SPIE Involvement:

Author

Publications (30)

Proceedings Article | 17 March 2023 Presentation

Sympathetic cooling and asymmetric interactions in optical binding

Graham Bruce, Yoshihiko Arita, XiaoYong Duan, Ewan Wright, Stephen Simpson, Pavel Zemánek, Kishan Dholakia

Proceedings Volume PC12436, PC124360Q (2023) https://doi.org/10.1117/12.2650232

KEYWORDS: Optical binding, Particles, Physics, Optical spheres, Modeling, Magnetism, Liquids

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Proceedings Article | 9 September 2019 Presentation

Photopolymerization with light fields possessing orbital angular momentum (Conference Presentation)

Yoshihiko Arita, Junhyung Lee, Katsuhiko Miyamoto, Paris Panagiotopoulos, Ewan Wright, Kishan Dholakia, Takashige Omatsu

Proceedings Volume 11083, 1108320 (2019) https://doi.org/10.1117/12.2530249

KEYWORDS: Photopolymerization, Nonlinear optics, Ultraviolet radiation, Polymerization, Diffraction, Wavefronts, Optical fibers, Modulation, Solitons, Numerical simulations

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Proceedings Article | 17 September 2018 Presentation

Helical microfibers created by photopolymerization with light fields possessing orbital angular momentum (Conference Presentation)

Yoshihiko Arita, Junhyung Lee, Shunsuke Toyoshima, Katsuhiko Miyamoto, Paris Panagiotopoulos, Ewan Wright, Kishan Dholakia, Takashige Omatsu

Proceedings Volume 10723, 1072324 (2018) https://doi.org/10.1117/12.2323222

KEYWORDS: Photopolymerization, Ultraviolet radiation, Wavefronts, Optical vortices, Polymerization, Diffraction, Optical manipulation, Micro optics, Polymers, Crystallography

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Proceedings Article | 8 May 2018 Open Access

Simulation of LWIR TW ultrashort pulses over kilometer ranges in the atmosphere

P. Panagiotopoulos, P. Rosenow, K. Schuh, M. Kolesik, E. Wright, S. Koch, J. Moloney

Proceedings Volume 10638, 106381L (2018) https://doi.org/10.1117/12.2306055

KEYWORDS: Atmospheric propagation, Wave propagation, Atmospheric modeling, Mid-IR, Ionization, Long wavelength infrared, Atmospheric optics, Physics, Picosecond phenomena, Dispersion

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Proceedings Article | 14 March 2018 Presentation

Levitated optomechanics of silica microparticles in vacuum placed in 2D and 3D optical potentials possessing orbital angular momentum (Conference Presentation)

Yoshihiko Arita, Michael Mazilu, Mingzhou Chen, Tom Vettenburg, Juan Aunon, Ewan Wright, Kishan Dholakia

Proceedings Volume 10549, 105491B (2018) https://doi.org/10.1117/12.2290534

KEYWORDS: Particles, Optomechanical design, Silica, Fourier transforms, Bessel beams, Beam propagation method, 3D image processing, Laser scattering, Scattering, Optical tracking

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Proceedings Article | 18 April 2017 Paper

Optical binding of two microparticles levitated in vacuum

Yoshihiko Arita, Ewan Wright, Kishan Dholakia

Proceedings Volume 10252, 102520Q (2017) https://doi.org/10.1117/12.2275310

KEYWORDS: Particles, Light scattering, Astronomical imaging, Integrated optics, Modulation, In situ metrology, Physics, Astronomy, Molecular interactions, Optical binding, Optical tweezers

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Proceedings Article | 18 April 2017 Paper

Dynamics of optically levitated microparticles in vacuum placed in 2D and 3D optical potentials possessing orbital angular momentum

Yoshihiko Arita, Michael Mazilu, Mingzhou Chen, Tom Vettenburg, Juan Auñón, Ewan Wright, Kishan Dholakia

Proceedings Volume 10252, 102520V (2017) https://doi.org/10.1117/12.2275309

KEYWORDS: Particles, Astronomical imaging, Integrated optics, Fourier transforms, Bessel beams, 3D image processing, Silica, Laser scattering, Scattering, Optical tracking, Optical tweezers

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We demonstrate the transfer of orbital angular momentum to optically levitated microparticles in vacuum [1]. We prepare two-dimensional and three-dimensional optical potentials. In the former case the microparticle is placed within a Laguerre-Gaussian beam and orbits the annular beam profile with increasing angular velocity as the air drag coefficient is reduced. We explore the particle dynamics as a function of the topological charge of the levitating beam. Our results reveal that there is a fundamental limit to the orbital angular momentum that may be transferred to a trapped particle, dependent upon the beam parameters and inertial forces present. This effect was predicted theoretically [2] and can be understood considering the underlying dynamics arising from the link between the magnitude of the azimuthal index and the beam radius [3]. Whilst a Laguerre-Gaussian beam scales in size with azimuthal index `, recently we have created a “perfect” vortex beam whose radial intensity profile and radius are both independent of topological charge [4, 5]. As the Fourier transform of a perfect vortex yields a Bessel beam. Imaging a perfect vortex, with its subsequent propagation thus realises a complex three dimensional optical field. In this scenario we load individual silica microparticles into this field and observe their trajectories. The optical gradient and scattering forces interplay with the inertial and gravitational forces acting on the trapped particle, including the rotational degrees of freedom. As a result the trapped microparticle exhibits a complex three dimensional motion that includes a periodic orbital motion between the Bessel and the perfect vortex beam. We are able to determine the three dimensional optical potential in situ by tracking the particle. This first demonstration of trapping microparticles within a complex three dimensional optical potential in vacuum opens up new possibilities for fundamental studies of many-body dynamics, mesoscopic entanglement [6, 7], and optical binding [8, 9].

Proceedings Article | 16 September 2014 Paper

Optical trapping with a perfect vortex beam

Mingzhou Chen, Michael Mazilu, Yoshihiko Arita, Ewan Wright, Kishan Dholakia

Proceedings Volume 9164, 91640K (2014) https://doi.org/10.1117/12.2064080

KEYWORDS: Particles, Spatial light modulators, Optical tweezers, Wavefronts, Microscopes, Video, Molybdenum, Polymers, Chemical species, Gases

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Proceedings Article | 17 October 2012 Paper

Theory and simulation of an optical spring mirror

E. M. Wright, M. Mazilu, S. Singh, K. Dholakia, P. Meystre

Proceedings Volume 8458, 84580A (2012) https://doi.org/10.1117/12.929281

KEYWORDS: Mirrors, Gaussian beams, Dielectric mirrors, Silica, Optical tweezers, Optical simulations, Dielectrics, Waveguides, Reflectivity, Reflection

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Proceedings Article | 10 October 2012 Paper

The role of spectral bandwidth in transverse optical binding

Michael Mazilu, Andrew Rudhall, Ewan Wright, Kishan Dholakia

Proceedings Volume 8458, 84583D (2012) https://doi.org/10.1117/12.930920

KEYWORDS: Optical binding, Particles, Polarization, Optical tweezers, Ultrafast phenomena, Astronomical imaging, Harmonic generation, Physics, Scattering

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Proceedings Article | 12 September 2011 Paper

Numerical simulations of high intensity pulse trains and plasma dynamics in passive femtosecond enhancement cavities

D. Carlson, John Mongelli, E. Wright, R. J. Jones

Proceedings Volume 8132, 813205 (2011) https://doi.org/10.1117/12.894687

KEYWORDS: Plasma, Ionization, Frequency combs, 3D modeling, Phase shifts, Extreme ultraviolet, Xenon, Numerical simulations, Femtosecond phenomena, High harmonic generation

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Proceedings Article | 9 September 2011 Paper

Spin-to-orbital angular momentum exchange via reflection from a cone

Masud Mansuripur, Armis Zakharian, Ewan Wright

Proceedings Volume 8097, 809716 (2011) https://doi.org/10.1117/12.899890

KEYWORDS: Jones calculus, Gaussian beams, Spiral phase plates, Dielectrics, Optical simulations, Reflection, Refractive index, Maxwell's equations, Optical vortices, Reflectors

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Proceedings Article | 20 August 2009 Paper

Optical nonlinearity of liquid nanosuspensions: Kerr versus exponential model

E. Wright, W. Lee, K. Dholakia, R. El-Ganainy, D. Christodoulides

Proceedings Volume 7400, 74001J (2009) https://doi.org/10.1117/12.825865

KEYWORDS: Nanoparticles, Beam propagation method, Nonlinear optics, Rayleigh scattering, Particles, Single mode fibers, Liquids, Digital image correlation, Capillaries, Kerr effect

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Proceedings Article | 20 August 2009 Paper

Revisiting transverse optical binding

Jörg Baumgartl, Andrew Rudhall, Michael Mazilu, Ewan Wright, Kishan Dholakia

Proceedings Volume 7400, 74001D (2009) https://doi.org/10.1117/12.826189

KEYWORDS: Particles, Optical binding, Polarization, Laser optics, Dielectrics, Optical tweezers, Water, Mirrors, Objectives, Physics

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Proceedings Article | 29 August 2008 Paper

Long distance beam propagation in colloidal suspensions: comparison between theory and experiment

E. Wright, W. M. Lee, P.-L. Giscard, K. Dholakia

Proceedings Volume 7038, 70380P (2008) https://doi.org/10.1117/12.796243

KEYWORDS: Light scattering, Nanoparticles, Particles, Refractive index, Beam propagation method, Scattering, Laser scattering, Rayleigh scattering, Nonlinear optics, Gaussian beams

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Proceedings Article | 11 September 2006 Paper

Visualization of optical binding

N. Metzger, W. Sibbett, E. Wright, Kishan Dholakia

Proceedings Volume 6326, 63262P (2006) https://doi.org/10.1117/12.679839

KEYWORDS: Optical spheres, Refractive index, Optical binding, Luminescence, Visualization, Optical arrays, Diffraction, Femtosecond phenomena, Optical tweezers, Dispersion

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Proceedings Article | 11 September 2006 Paper

Enhanced particle guiding using supercontinuum radiation

Pascal Fischer, Antonia Carruthers, Karen Volke-Sepulveda, Ewan Wright, Helen Little, Christian T. Brown, Wilson Sibbett, Kishan Dholakia

Proceedings Volume 6326, 63261G (2006) https://doi.org/10.1117/12.678080

KEYWORDS: Particles, Femtosecond phenomena, Optical spheres, Continuous wave operation, Chromatic aberrations, Bessel beams, Light scattering, Wave propagation, Absorption, Gaussian beams

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Proceedings Article | 11 September 2006 Paper

Dielectric resonator: cavity-enhanced optical manipulation in the near-field

Peter Reece, Ewan Wright, Veneranda Garcés-Chávez, Kishan Dholakia

Proceedings Volume 6326, 63260C (2006) https://doi.org/10.1117/12.681988

KEYWORDS: Particles, Dielectrics, Near field optics, Waveguides, Optical tweezers, Prisms, Resonators, Optical manipulation, Near field, Wave propagation

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Proceedings Article | 27 August 2005 Paper

Optical binding of Chinese hamster ovary cells

N. Metzger, P. Jess, L. Paterson, E. Wright, K. Dholakia

Proceedings Volume 5930, 59300M (2005) https://doi.org/10.1117/12.618745

KEYWORDS: Refractive index, Optical binding, Multimode fibers, Particles, Optical tweezers, Single mode fibers, Optical arrays, Water, Silica, Ovary

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Proceedings Article | 18 October 2004 Paper

Optically bound arrays of microscopic particles in one dimension

David McGloin, Antonia Carruthers, Kishan Dholakia, Ewan Wright

Proceedings Volume 5514, (2004) https://doi.org/10.1117/12.555663

KEYWORDS: Optical spheres, Particles, Scattering, Laser scattering, Refractive index, Beam propagation method, Optical arrays, Crystals, Silica, Light scattering

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SPIE Journal Paper | 1 October 2003

Compact multimode pumped erbium-doped phosphate fiber amplifiers

Shibin Jiang, Sergio Mendes, Yongdan Hu, Gualtiero Nunzi Conti, Arturo Chavez-Pirson, Yushi Kaneda, Tao Luo, Qingyun Chen, Sandrine Hocde, Dan Nguyen, Ewan Wright, Jiafu Wang, Wenyan Tian, Thomas Nikolajsen, Nasser Peyghambarian

OE, Vol. 42, Issue 10, (October 2003) https://doi.org/10.1117/12.10.1117/1.1600460

KEYWORDS: Optical amplifiers, Fiber amplifiers, Glasses, Semiconductor lasers, Cladding, Absorption, Erbium, Beam propagation method, High power fiber amplifiers, Ytterbium

Proceedings Article | 13 February 2001 Paper

High-power femtosecond light strings as novel atmospheric probes

Jerome Moloney, Miroslav Kolesik, Ewan Wright, Michal Mlejnek

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417070

KEYWORDS: Polarization, Plasma, Femtosecond phenomena, Plasma generation, Atmospheric propagation, Diffraction, Waveguides, Computer simulations, Ionization, Electrons

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Proceedings Article | 14 April 2000 Paper

Wide-beam high-power femtosecond pulse propagation in air

Miroslav Kolesik, Michal Mlejnek, Jerome Moloney, Ewan Wright

Proceedings Volume 3927, (2000) https://doi.org/10.1117/12.382062

KEYWORDS: Polarization, Plasma, Femtosecond phenomena, Atmospheric propagation, Plasma generation, Absorption, Computer simulations, Diffraction, Dispersion, Beam propagation method

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Proceedings Article | 23 March 2000 Paper

Wide-beam high-power femtosecond pulse propagation in air

Miroslav Kolesik, Michal Mlejnek, Jerome Moloney, Ewan Wright

Proceedings Volume 3928, (2000) https://doi.org/10.1117/12.379899

KEYWORDS: Polarization, Plasma, Femtosecond phenomena, Atmospheric propagation, Plasma generation, Computer simulations, Absorption, Diffraction, Dispersion, Ionization

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Proceedings Article | 1 May 1997 Paper

Quantum dynamics of an atomic Bose-Einstein condensate

Gerard Milburn, Joel Corney, D. Harris, E. Wright, D. Walls

Proceedings Volume 2995, (1997) https://doi.org/10.1117/12.273762

KEYWORDS: Particles, Chemical species, Modulation, Fourier transforms, Complex systems, Solids, Strontium, Physics, Quantum wells, Motion models

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Proceedings Article | 7 May 1996 Paper

Effects of laser-induced breakdown, self-focusing, and plasma shielding on ultrashort-pulse propagation in the eye

Paul Kennedy, Ewan Wright, Quanyuan Feng, Kirk Cook, Daniel Hammer, Charles Thompson, Jerome Moloney, Benjamin Rockwell, Jeffrey Druessel, Alan Newell

Proceedings Volume 2681, (1996) https://doi.org/10.1117/12.239600

KEYWORDS: Laser induced breakdown spectroscopy, Plasma, Eye, Eye models, Ionization, Numerical simulations, Dispersion, Ultrafast phenomena, Vitreous, Data modeling

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Proceedings Article | 10 April 1995 Paper

Numerical modeling of inhomogeneously pumped circular-grating distributed feedback (DFB) lasers

Keith Kasunic, E. Wright, Nasser Peyghambarian

Proceedings Volume 2398, (1995) https://doi.org/10.1117/12.206338

KEYWORDS: Reflectivity, Numerical modeling, Semiconductor lasers, Optical character recognition, Waveguide lasers, Waveguides, Gaussian beams, Differential equations, Mirrors, Wavefronts

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Proceedings Article | 25 July 1994 Paper

Quantum dot glass integrated optical devices

N. Peyghambarian, H. Tajalli, Ewan Wright, Stephan Koch, S. Iraj Najafi, Daniele Hulin, John Mackenzie

Proceedings Volume 10275, 102750E (1994) https://doi.org/10.1117/12.179755

KEYWORDS: Quantum dots, Glasses, Integrated optics, Waveguides, Absorption, Cadmium sulfide, Semiconductors, Crystals, Switching, Hole burning spectroscopy

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Proceedings Article | 30 June 1994 Paper

Material modifications of the noise properties of gain-guided semiconductor microlasers

Ewan Wright, Michael Rivera

Proceedings Volume 2146, (1994) https://doi.org/10.1117/12.178524

KEYWORDS: Semiconductors, Systems modeling, Diffusion, Silicon, Laser applications, Correlation function, Laser damage threshold, Laser sources, Data communications, Optical microcavities

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Proceedings Article | 1 April 1992 Paper

Optical switching and propagation effects in nonlinear GaAs MQW waveguides

Paul Harten, Andreas Knorr, Jason Sokoloff, Francois Brown de Colstoun, Sukmock Lee, Ruxiang Jin, Ewan Wright, Galina Khitrova, Hyatt Gibbs, Stephan Koch, Nasser Peyghambarian

Proceedings Volume 1626, (1992) https://doi.org/10.1117/12.58091

KEYWORDS: Waveguides, Nonlinear optics, Switching, Semiconductors, Picosecond phenomena, Polarization, Gallium arsenide, Wave propagation, Excitons, Dispersion

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