Prof. Iam-Choon Khoo Profile

Prof. Iam-Choon Khoo

Professor at Pennsylvania State Univ

SPIE Involvement:

Conference Program Committee | Conference Chair | Author | Editor

Publications (68)

Proceedings Article | 3 October 2024 Presentation

Liquid-crystal-based reconfigurable structural nonlinearity

Tsung-Hsien Lin, Zhiwen Liu, Xingjie Ni, Iam-Choon Khoo

Proceedings Volume PC13113, PC131130O (2024) https://doi.org/10.1117/12.3026919

KEYWORDS: Liquid crystals, Spatial light modulators, Laser scattering, Structural materials, Speckle pattern, Spatial resolution, Scattering, Reliability, Photonic crystals, Phase distribution

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Proceedings Article | 30 September 2024 Presentation

Photonic computing using reconfigurable liquid crystal based scattering media

Tunan Xia, Cheng-Kuan Wu, Tsung-Hsien Lin, Xingjie Ni, Iam-Choon Khoo, Zhiwen Liu

Proceedings Volume PC13121, PC1312109 (2024) https://doi.org/10.1117/12.3028859

KEYWORDS: Scattering media, Liquid crystals, Optical computing, Photonic crystals, Nonlinear crystals, Multiple scattering, Mirrors, Liquids, Design, Crystals

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Proceedings Article | 30 September 2024 Presentation + Paper

Super-thick and large areal size monocrystalline cholesteric and blue-phase liquid crystals for ultrafast switching and image processing

I. Khoo, Tsung-Hsien Lin, C.-W. Chen

Proceedings Volume 13121, 1312103 (2024) https://doi.org/10.1117/12.3029716

KEYWORDS: Liquid crystals, Ultrafast phenomena, Photonic crystals, Nonlinear optics, Image processing, Crystals, Polarization, Liquids, Crystal optics, Switching

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Proceedings Article | 29 September 2023 Paper

Liquid crystals for optical switches, smart windows, reconfigurable/tunable meta-structures, micro-resonator coupling and plasmonic nanostructures

I. C. Khoo

Proceedings Volume 12658, 126580D (2023) https://doi.org/10.1117/12.2679123

KEYWORDS: Liquid crystals, Optical switching, Polarization, Pulsed laser operation, Optical transmission, Ultrafast phenomena, Modulation, Plasmonics, Optical metamaterials, Nonlinear optics

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Proceedings Article | 29 September 2023 Presentation + Paper

Dual-frequency field assembly of over mm-thick nonlinear chiral photonic crystals for advanced photonic applications

I. C. Khoo, J.-W. Chen, Tsung-Hsien Lin, Ting-Mao Feng

Proceedings Volume 12658, 1265809 (2023) https://doi.org/10.1117/12.2678029

KEYWORDS: Photonic crystals, Ultrafast phenomena, Fabrication, Liquid crystals, Electric fields, Polarization, Optical alignment

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Proceedings Article | 3 October 2022 Presentation

Electrically tunable achromatic polarization rotator and its application for smart glass (Conference Presentation)

Ting-Mao Feng, Li-Min Chang, Duan-Yi Guo, Chun-Wei Chen, Iam-Choon Khoo, Tsung-Hsien Lin

Proceedings Volume PC12207, PC122070F (2022) https://doi.org/10.1117/12.2634336

KEYWORDS: Polarization, Glasses, Liquid crystals, Scattering, Light scattering, Dispersion, Visible radiation, Quantum optics, Polarizers, Polarization control

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Proceedings Article | 3 October 2022 Presentation

Extraordinarily thick liquid crystalline chiral photonic crystals and their extraordinary optical properties (Conference Presentation)

Iam-Choon Khoo, Chun-Wei Chen, Ting-Mao Feng, Tsung-Hsien Lin

Proceedings Volume PC12207, PC1220708 (2022) https://doi.org/10.1117/12.2633651

KEYWORDS: Photonic crystals, Liquid crystals, Liquids, Crystals, Optical properties, Nonlinear crystals, Visible radiation, Switching, Polarization, Mid-IR

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Proceedings Article | 2 August 2021 Presentation

Field-induced lattice transformation of blue-phase liquid crystals

Iam-Choon Khoo, Chun-Wei Chen, Tsung-Hsien Lin

Proceedings Volume 11807, 118070T (2021) https://doi.org/10.1117/12.2596117

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Proceedings Article | 1 August 2021 Presentation

Liquid-crystal-based chiral photonic crystals for polarization rotation of complex vector fields

Chun-Wei Chen, Iam Choon Khoo

Proceedings Volume 11807, 118070N (2021) https://doi.org/10.1117/12.2596335

KEYWORDS: Polarization, Photonic crystals, Compound parabolic concentrators, Transmittance, Photon polarization, Birefringence

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Proceedings Article | 20 August 2020 Presentation

Dynamics of field induced lattice reconfiguration of blue-phase liquid crystals

Iam-Choon Khoo, Chun-Wei Chen, Duan-Yi Guo, Tsung-Hsien Lin

Proceedings Volume 11472, 1147214 (2020) https://doi.org/10.1117/12.2569316

KEYWORDS: Liquid crystals, Molecular self-assembly, Continuous wave operation, Crystals, Laser crystals, Crystallography

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Proceedings Article | 19 September 2017 Presentation

Ultrafast nonlinear photonic in cholesteric liquid crystals (Conference Presentation)

Yikun Liu, Jianying Zhou, Tsung-Hsien Lin, Iam-Choon Khoo

Proceedings Volume 10361, 103610I (2017) https://doi.org/10.1117/12.2272591

KEYWORDS: Ultrafast phenomena, Liquid crystals, Nonlinear optics, Photonic crystals, Photonic liquid crystal fibers, Optical solitons, Modulation, Optical isolators

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Proceedings Article | 25 August 2017 Presentation + Paper

Self-assembly in chiral nematic liquid crystal

Julian Evans, Nan Wang, Iam Choon Khoo, Sailing He

Proceedings Volume 10361, 1036103 (2017) https://doi.org/10.1117/12.2272574

KEYWORDS: Liquid crystals, Nanoparticles, Molecular self-assembly, Nanostructures

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Proceedings Article | 15 February 2017 Paper

Femtoseconds-picoseconds nonlinear optics with nearly-mm thick cholesteric liquid crystals

I. C. Khoo, Chun-Wei Chen, Tsung-Jui Ho, Tsung-Hsien Lin

Proceedings Volume 10125, 1012507 (2017) https://doi.org/10.1117/12.2257429

KEYWORDS: Liquid crystals, Nonlinear optics, Modulation, Femtosecond phenomena, Picosecond phenomena, Ultrafast phenomena, Photonic crystals, Crystals, Nonlinear crystals, Crystal optics, Dispersion, Photonics, Pulsed laser operation, Laser scattering, Scattering

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Proceedings Article | 2 November 2016 Presentation

Nonlinear femtosecond pulse compression in cholesteric liquid crystals (Conference Presentation)

Yikun Liu, Jianying Zhou, Tsung-Hsien Lin, Iam-Choon Khoo

Proceedings Volume 9940, 99400I (2016) https://doi.org/10.1117/12.2236778

KEYWORDS: Liquid crystals, Femtosecond phenomena, Ultrafast phenomena, Dispersion, Optical components, Pulsed laser operation, Picosecond phenomena, Sun, Current controlled current source

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Proceedings Article | 5 October 2015 Presentation

Nematic and blue phase liquid crystals for temperature stabilization and active optical tuning of silicon photonic devices (Presentation Recording)

Joanna Ptasinski, Iam Choon Khoo, Yeshaiahu Fainman

Proceedings Volume 9565, 95650D (2015) https://doi.org/10.1117/12.2187087

KEYWORDS: Liquid crystals, Silicon photonics, Active optics, Resonators, Integrated optics, Diffraction gratings, Diffraction, Warfare, Video, Current controlled current source

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Proceedings Article | 5 October 2015 Presentation

Studies of the underlying mechanisms for optical nonlinearities of blue phase liquid crystals (Presentation Recording)

Chun-Wei Chen, Iam Choon Khoo, Shuo Zhao, Tsung-Hsien Lin, Tsung-Jui Ho

Proceedings Volume 9565, 956505 (2015) https://doi.org/10.1117/12.2189490

KEYWORDS: Liquid crystals, Nonlinear optics, Distortion, Sun, Diffraction, Diffraction gratings, Nonlinear response, Refractive index, Electrostriction, Holmium

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Proceedings Article | 7 October 2014 Paper

Transient responses of liquid crystals for optical switching with microseconds: nanoseconds response speed

S. Zhao, K. L. Hong, I. C. Khoo

Proceedings Volume 9182, 91820U (2014) https://doi.org/10.1117/12.2060596

KEYWORDS: Liquid crystals, Nonlinear optics, Pulsed laser operation, Image processing, Switching, Transient nonlinear optics, Refractive index, Birefringence, Optical switching, Polarizers

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Proceedings Article | 7 October 2014 Paper

Liquid crystal claddings for passive temperature stabilization of silicon photonics

Joanna Ptasinski, Iam-Choon Khoo, Yeshaiahu Fainman

Proceedings Volume 9182, 91820W (2014) https://doi.org/10.1117/12.2058515

KEYWORDS: Liquid crystals, Silicon, Waveguides, Silicon photonics, Thermal optics, Cladding, Resonators, Absorption, Computing systems, Data processing

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Proceedings Article | 16 October 2013 Paper

k-vector angular correlations in negative refraction for TM polarization in nanosphere dispersed liquid crystal (NDLC) metamaterial

G. Pawlik, W. Walasik, K. Tarnowski, A. Mitus, I. Khoo

Proceedings Volume 8901, 890111 (2013) https://doi.org/10.1117/12.2030905

KEYWORDS: Metamaterials, Liquid crystals, Negative refraction, Refraction, Magnetism, Interfaces, Electromagnetic radiation, Dielectric polarization, Polarization, Wave propagation

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Proceedings Article | 12 September 2013 Paper

Negative refraction for TM polarization in nanosphere dispersed liquid crystal (NDLC) metamaterial

G. Pawlik, W. Walasik, K. Tarnowski, A. Mitus, I. Khoo

Proceedings Volume 8828, 88280E (2013) https://doi.org/10.1117/12.2025176

KEYWORDS: Negative refraction, Liquid crystals, Metamaterials, Polarization, Magnetism, Optical spheres, Molecules, Electromagnetic radiation, Refraction, Interfaces

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Proceedings Article | 12 September 2013 Paper

Lasing effect in blue phase liquid crystal

Tsung-Hsien Lin, Chun-Wei Chen, Hung-Chang Jau, Chun-Hong Lee, Chun-Ta Wang, Chih-Wei Wu, Huai-Ping Huang, I. Khoo

Proceedings Volume 8828, 882808 (2013) https://doi.org/10.1117/12.2022738

KEYWORDS: Random lasers, Liquid crystals, Laser scattering, Polymers, Light scattering, Scattering, Luminescence, Laser damage threshold, Multiple scattering, Capillaries

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Proceedings Article | 12 September 2013 Paper

Active electrical and optical tuning of silicon photonic devices with liquid crystals

Joanna Ptasinski, Sung Kim, Lin Pang, Iam-Choon Khoo, Yeshaiahu Fainman

Proceedings Volume 8828, 882813 (2013) https://doi.org/10.1117/12.2022368

KEYWORDS: Liquid crystals, Silicon photonics, Resonators, Silicon, Waveguides, Cladding, Active optics, Silica, Integrated optics, Optics manufacturing

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Proceedings Article | 11 October 2012 Paper

Optimization of cloak effect in nanosphere dispersed liquid crystal metamaterial

G. Pawlik, W. Walasik, M. Jarema, A. Mitus, I. Khoo

Proceedings Volume 8475, 847508 (2012) https://doi.org/10.1117/12.929128

KEYWORDS: Metamaterials, Liquid crystals, Infrared radiation, Polarization, Refractive index, Molecules, Optical spheres, Absorption, Plasma, Mie scattering

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Proceedings Article | 1 May 2012 Paper

Cylindrical cloak design in layered nanosphere dispersed liquid crystal metamaterial

G. Pawlik, W. Walasik, M. Jarema, A. Mitus, I. C. Khoo

Proceedings Volume 8423, 84231E (2012) https://doi.org/10.1117/12.922781

KEYWORDS: Liquid crystals, Metamaterials, Refractive index, Molecules, Infrared radiation, Magnetism, Polarization, Scattering, Optical spheres, Mie scattering

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Proceedings Article | 8 September 2011 Paper

Toward cloaking in nanosphere dispersed liquid crystal (NDLC) metamaterial

G. Pawlik, W. Salejda, K. Tarnowski, W. Walasik, A. Mitus, I. Khoo

Proceedings Volume 8114, 81140G (2011) https://doi.org/10.1117/12.893900

KEYWORDS: Metamaterials, Liquid crystals, Refractive index, Optical spheres, Molecules, Polarization, Scattering, Infrared radiation, Magnetism, Optical design

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Proceedings Article | 18 May 2011 Paper

Towards cylindrical cloak in nanosphere dispersed liquid crystal metamaterial

G. Pawlik, W. Walasik, M. Jarema, A. Mitus, I. Khoo

Proceedings Volume 8070, 80700Q (2011) https://doi.org/10.1117/12.886967

KEYWORDS: Metamaterials, Liquid crystals, Refractive index, Optical spheres, Molecules, Technetium, Monte Carlo methods, Infrared radiation, Modulation, Scattering

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Proceedings Article | 18 August 2010 Paper

Field-, temperature-, and anchoring-induced inhomogeneous index distribution of a nano-dispersed nematic liquid crystal near the Freedericksz transition: Monte Carlo studies

G. Pawlik, W. Walasik, A. Mitus, I. Khoo

Proceedings Volume 7775, 77750K (2010) https://doi.org/10.1117/12.860126

KEYWORDS: Monte Carlo methods, Modulation, Liquid crystals, Refractive index, Molecules, Metamaterials, Temperature metrology, Refraction, Optical spheres, Terahertz radiation

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Proceedings Article | 29 April 2010 Paper

Modulation of refractive index caused by amplitude variation and heterogeneity of anchoring forces in nanosphere-doped liquid crystal metamaterial: Monte Carlo analysis

G. Pawlik, M. Jarema, W. Walasik, A. Mitus, I. C. Khoo

Proceedings Volume 7711, 77111M (2010) https://doi.org/10.1117/12.854726

KEYWORDS: Liquid crystals, Modulation, Refractive index, Monte Carlo methods, Molecules, Metamaterials, Amplitude modulation, Optical spheres, Terahertz radiation, Refraction

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Proceedings Article | 27 August 2008 Paper

Refractive index engineering of liquid crystals with nano-particulates

Andres Diaz, Yi Ma, Junbin Huang, Justin Liou, Jae Hong Park, Iam Choon Khoo

Proceedings Volume 7050, 705013 (2008) https://doi.org/10.1117/12.794269

KEYWORDS: Refractive index, Silver, Liquid crystals, Gold, Nanoparticles, Birefringence, Absorption, Optical properties, Particles, Optical spheres

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Proceedings Article | 12 September 2007 Paper

Nonlinear dye-doped liquid crystals for fast and broadband CW and long-pulse laser power control and switching

J. Liou, J. Park, M. Stinger, A. Diaz, J. Huang, I. Khoo

Proceedings Volume 6654, 66540T (2007) https://doi.org/10.1117/12.732431

KEYWORDS: Liquid crystals, Switching, Polarization, Polarizers, Continuous wave operation, Anisotropy, Birefringence, Optical limiting, Beam controllers, Modulation

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Proceedings Article | 12 September 2007 Paper

Tunable refractive index materials with metallic nano-spheres dispersed in organic liquids

Andres Diaz, Shoichi Kubo, Yan Tang, Justin Liou, Theresa Mayer, Iam Choon Khoo, Thomas Mallouk

Proceedings Volume 6654, 66540V (2007) https://doi.org/10.1117/12.736552

KEYWORDS: Refractive index, Gold, Silver, Nanoparticles, Liquids, Liquid crystals, Optical spheres, Absorption, Optical properties, Dielectrics

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Proceedings Article | 12 September 2007 Paper

Nanosecond-cw visible-IR all-optical switching and nonlinear transmission with nonlinear organic optical liquids and liquid crystals

I. Khoo, A. Diaz, J. Liou, J. Park, M. Stinger, S. Kubo, T. Mallouk

Proceedings Volume 6654, 66540D (2007) https://doi.org/10.1117/12.732578

KEYWORDS: Liquid crystals, Liquids, Nonlinear optics, Continuous wave operation, Optical limiting, Fiber lasers, Switching, Pulsed laser operation, Optical switching, Infrared radiation

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Proceedings Article | 12 September 2007 Paper

Dynamic polarization switching and stimulated orientational scattering in nematic liquid crystals

Michael Stinger, Andres Diaz, Justin Liou, Iam-Choon Khoo

Proceedings Volume 6654, 66540S (2007) https://doi.org/10.1117/12.732419

KEYWORDS: Liquid crystals, Polarization, Scattering, Laser scattering, Switching, Argon ion lasers, Energy transfer, Numerical simulations, Light scattering, Distortion

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Proceedings Article | 9 May 2007 Paper

Liquid crystalline nonlinear optical metamaterials with low-loss tunable negative-zero-positive refractive indices

I. C. Khoo, A. Diaz, D.-H. Kwon, D. H. Werner

Proceedings Volume 6587, 658702 (2007) https://doi.org/10.1117/12.721506

KEYWORDS: Liquid crystals, Refractive index, Metamaterials, Terahertz radiation, Liquids, Crystals, Dielectrics, Birefringence, Nonlinear optics, Nonlinear crystals

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Proceedings Article | 7 February 2007 Paper

Nano-spheres dispersed liquid crystal supra-nonlinear negative-zero-positive index metamaterials

I. C. Khoo, A. Diaz

Proceedings Volume 6470, 64700P (2007) https://doi.org/10.1117/12.705758

KEYWORDS: Liquid crystals, Refractive index, Metamaterials, Terahertz radiation, Birefringence, Nonlinear optics, Optical spheres, Liquids, Crystals, Light scattering

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Proceedings Article | 15 September 2006 Paper

Tunable 3D photonic crystals by liquid crystal infiltration

C. Summers, E. Graugnard, D. Gaillot, J. King, Y. Zhang-Williams, I. Khoo

Proceedings Volume 6332, 63320R (2006) https://doi.org/10.1117/12.682654

KEYWORDS: Liquid crystals, Dielectrics, Refractive index, Photonic crystals, Atomic layer deposition, Reflectivity, Optical spheres, Optical properties, Modulation, Electro optics

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Proceedings Article | 15 September 2006 Paper

Liquid crystal cladded metallo-dielectric and all-dielectric frequency selective surfaces for broadband tunable optical filters and planar negative index optics

A. Diaz, I. Khoo, J. Bossard, D. Werner

Proceedings Volume 6332, 63320W (2006) https://doi.org/10.1117/12.679865

KEYWORDS: Liquid crystals, FSS based metamaterials, Optical filters, Terahertz radiation, Refractive index, Metamaterials, Dielectrics, Genetic algorithms, Nanofabrication, Tunable filters

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Proceedings Article | 20 August 2005 Paper

Electro-optical and nonlinear optical properties of semiconductor nanorod doped liquid crystals

Yana Williams, Kan Chan, Jae Hong Park, Iam Choon Khoo, Brad Lewis, Thomas Mallouk

Proceedings Volume 5936, 593613 (2005) https://doi.org/10.1117/12.617730

KEYWORDS: Liquid crystals, Photorefraction, Electro optics, Complex systems, Diffraction, Semiconductors, Dielectrics, Anisotropy, Electro optical systems, Nanorods

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Proceedings Article | 16 December 2004 Paper

Nonlinear molecular photonics and controlled laser transmission through a nonlinear fiber array

Andres Diaz, Iam Choon Khoo

Proceedings Volume 5621, (2004) https://doi.org/10.1117/12.582658

KEYWORDS: Transmittance, Absorption, Liquids, Optical limiting, Saturable absorption, Molecules, Fiber lasers, Nonlinear optics, Molecular photonics, Laser beam propagation

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Proceedings Article | 15 October 2004 Paper

Direct optical holographic fabrication of photonic crystals in polymeric dispersed nematic and isotropic liquid crystals

Iam Khoo, Yana Williams, Kan Chen

Proceedings Volume 5518, (2004) https://doi.org/10.1117/12.563061

KEYWORDS: Liquid crystals, Polymers, Photonic crystals, Diffraction, Liquids, Diffraction gratings, Scanning electron microscopy, Holography, Crystal optics, Switching

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Proceedings Article | 15 October 2004 Paper

All-optical self-induced polarization switching by two-wave mixing in nematic liquid crystals

Iam Khoo, Jianwu Ding, Andres Diaz

Proceedings Volume 5518, (2004) https://doi.org/10.1117/12.563062

KEYWORDS: Liquid crystals, Laser scattering, Scattering, Polarization, Switching, Two wave mixing, Visible radiation, Infrared radiation, Crystals, Thin films

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Proceedings Article | 5 January 2004 Paper

Supra-photorefractivity of C60- and carbon-nanotube-doped nematic liquid crystals

Iam-Choon Khoo, Yana Zhang, Andres Diaz, Jianwu Ding, Kan Chen

Proceedings Volume 5213, (2004) https://doi.org/10.1117/12.504367

KEYWORDS: Liquid crystals, Diffraction, Scattering, Diffraction gratings, Light scattering, Carbon nanotubes, Nonlinear optics, Molecules, Transient nonlinear optics, Carbon

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Proceedings Article | 11 December 2003 Paper

All-optical liquid crystal spatial light modulators

Nelson Tabiryan, Vladimir Grozhik, Iam Choon Khoo, Sarik Nersisyan, Svetlana Serak

Proceedings Volume 5162, (2003) https://doi.org/10.1117/12.503530

KEYWORDS: Liquid crystals, Spatial light modulators, High power lasers, Modulation, Phase shifts, Beam controllers, Semiconductors, Geometrical optics, Molecules, Electrodes

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Proceedings Article | 3 November 2003 Paper

Multiphoton and excited-state absorptions of an organic liquid for optical limiting applications

Iam Choon Khoo, Andre Diaz, Jianwu Ding

Proceedings Volume 5211, (2003) https://doi.org/10.1117/12.509309

KEYWORDS: Absorption, Liquids, Optical limiting, Picosecond phenomena, Laser energy, Fiber lasers, Thin films, Molecules, Molecular photonics, Q switched lasers

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Proceedings Article | 12 December 2002 Paper

Widely tunable nonlinear liquid crystal-based photonic crystals

Iam-Choon Khoo, Yana Zhang, Andrew Diaz, Jianwu Ding, Ivan Divliansky, Kito Holliday, Theresa Mayer, V. Crespi, David Scrymgeour, V. Gopalan

Proceedings Volume 4799, (2002) https://doi.org/10.1117/12.453287

KEYWORDS: Liquid crystals, Photonic crystals, Crystals, Refractive index, Liquids, Diffraction gratings, Switching, Nonlinear crystals, Switches, Pulsed laser operation

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Proceedings Article | 12 December 2002 Paper

All-optical polarization conversion of cw 1.55 um lasers with liquid crystals by stimulated scattering

Iam-Choon Khoo, Jianwu Ding, Kan Chen, Andrew Diaz

Proceedings Volume 4799, (2002) https://doi.org/10.1117/12.453286

KEYWORDS: Laser scattering, Liquid crystals, Scattering, Polarization, Continuous wave operation, Dielectric polarization, Laser crystals, Crystals, Birefringence, Light scattering

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Proceedings Article | 11 December 2001 Paper

Communication-wavelength (1.55 um) laser-induced refractive index change in nematic liquid crystalline films

Iam-Choon Khoo, Malgosia Kaczmarek, Min-Yi Shih, Atsushi Shishido, Jianwu Ding, Yana Zhang, Michael Wood

Proceedings Volume 4463, (2001) https://doi.org/10.1117/12.449937

KEYWORDS: Liquid crystals, Refractive index, Crystals, Thermal effects, Liquids, Infrared radiation, Phase modulation, Laser beam diagnostics, Laser crystals, Liquid crystal lasers

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Proceedings Article | 11 December 2001 Paper

Nonlinear liquid crystals in periodic structures

Atsushi Shishido, Ivan Divliansky, Suzushi Nishimura, Yana Zhang, Jayantilal Patel, Thomas Mallouk, Theresa Mayer, Iam-Choon Khoo

Proceedings Volume 4463, (2001) https://doi.org/10.1117/12.449944

KEYWORDS: Liquid crystals, Diffraction, Diffraction gratings, Glasses, Refractive index, Dielectrics, Polymers, Nonlinear optics, Photonic crystals, Photomasks

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Proceedings Article | 12 April 2001 Paper

Two-dimensional spatial solitons in nematic liquid crystals

Marco Peccianti, Cesare Umeton, Iam-Choon Khoo, Alfredo DeRossi, Gaetano Assanto

Proceedings Volume 4271, (2001) https://doi.org/10.1117/12.424716

KEYWORDS: Spatial solitons, Liquid crystals, Solitons, Polarization, Beam propagation method, Wave propagation, Glasses, Molecules, Thermography, Interfaces

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Proceedings Article | 29 November 2000 Paper

Modeling nonlinear photonics of nonlinear fiber core for optical limiting application

Iam-Choon Khoo, Michael Wood, Pao Chen, Min-Yi Shih, Atsushi Shishido, Andrew Diaz

Proceedings Volume 4106, (2000) https://doi.org/10.1117/12.408510

KEYWORDS: Absorption, Pulsed laser operation, Optical limiting, Liquids, Fiber lasers, Continuous wave operation, Nonlinear optics, Liquid crystals, Picosecond phenomena, Thermal effects

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Proceedings Article | 24 October 2000 Paper

Supra-nonlinear photosensitive liquid crystals for image processing, switchable holographic lens and optical limiting

Iam-Choon Khoo, Min-Yi Shih, Atsushi Shishido

Proceedings Volume 4107, (2000) https://doi.org/10.1117/12.405318

KEYWORDS: Liquid crystals, Diffraction gratings, Molecules, Holograms, Diffraction, Polarization, Image processing, Nonlinear optics, Optical limiting, Holography

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Proceedings Article | 24 October 2000 Paper

All-optical polarization holography by means of nematic liquid crystal doped with azobenzene liquid crystal

Atsushi Shishido, Min-Yi Shih, Iam-Choon Khoo

Proceedings Volume 4107, (2000) https://doi.org/10.1117/12.405316

KEYWORDS: Polarization, Liquid crystals, Diffraction gratings, Diffraction, Molecules, Holography, Laser beam diagnostics, Refractive index, Crystals, Dielectric polarization

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Proceedings Article | 14 October 1999 Paper

Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting

Iam-Choon Khoo, Min-Yi Shih, Michael Wood, Pao Chen

Proceedings Volume 3800, (1999) https://doi.org/10.1117/12.365810

KEYWORDS: Liquid crystals, Transient nonlinear optics, Refractive index, Image processing, Optical limiting, Phase shifts, Sensors, Polarization, Argon ion lasers, Nonlinear optics

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Proceedings Article | 14 October 1999 Paper

Nematic liquid crystal alignment and nonlinear diffraction with subwavlength surface gratings

Iam-Choon Khoo, Min-Yi Shih, Pao Chen, Michael Wood, Zhaoning Yu, Stephen Chou

Proceedings Volume 3800, (1999) https://doi.org/10.1117/12.365807

KEYWORDS: Liquid crystals, Diffraction, Diffraction gratings, Glasses, Nonlinear crystals, Refractive index, Information operations, Optical alignment, Polymers, Absorption

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Proceedings Article | 4 October 1999 Paper

Nanosecond and picosecond nonlinear absorption studies of a highly nonlinear organic liquid for optical limiting application

Iam-Choon Khoo, Pao Chen, Michael Wood, Mary Miller, Andrew Mott, Michael Ferry

Proceedings Volume 3798, (1999) https://doi.org/10.1117/12.363881

KEYWORDS: Absorption, Liquids, Picosecond phenomena, Pulsed laser operation, Laser energy, Fiber lasers, Nonlinear optics, Optical limiting, Molecular photonics, Visible radiation

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Proceedings Article | 14 October 1998 Paper

Self-defocusing and optical limiting of nano-Watt cw laser and image processing at u-Watt/cm2 intensity with nematic liquid crystals

Iam-Choon Khoo, Michael Wood, Pao Chen, Min-Yi Shih, Brett Guenther

Proceedings Volume 3475, (1998) https://doi.org/10.1117/12.326900

KEYWORDS: Liquid crystals, Optical limiting, Image processing, Diffraction, Refractive index, Continuous wave operation, Diffraction gratings, Laser processing, Birefringence, Electrodes

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Proceedings Article | 12 October 1998 Paper

Novel liquid-cored fiber and liquid crystal film for sensor protection against visible ps-cw lasers

Iam-Choon Khoo, Michael Wood, Pao Chen, Min-Yi Shih, Brett Guenther

Proceedings Volume 3472, (1998) https://doi.org/10.1117/12.326888

KEYWORDS: Absorption, Fiber lasers, Liquids, Liquid crystals, Optical limiting, Picosecond phenomena, Pulsed laser operation, Laser energy, Continuous wave operation, Laser damage threshold

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Proceedings Article | 30 October 1997 Paper

Beam amplification and cleanup with two- and four-wave mixing in photorefractive nematic liquid crystal films

Brett Guenther, Iam-Choon Khoo

Proceedings Volume 3143, (1997) https://doi.org/10.1117/12.290765

KEYWORDS: Liquid crystals, Four wave mixing, Laser beam diagnostics, Photorefraction, Phase shifts, Wave propagation, Nonlinear optics, Adaptive optics, Crystals, Polarization

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Proceedings Article | 10 October 1997 Paper

Analytical modeling of nonlinear- and excited-state-absorption and optical limiting in a liquid-cored fiber array

Iam-Choon Khoo, Michael Wood, Min-Yi Shih, Brett Guenther, Pao Chen

Proceedings Volume 3146, (1997) https://doi.org/10.1117/12.284162

KEYWORDS: Absorption, Optical limiting, Liquids, Fiber lasers, Cladding, Nonlinear optics, Liquid crystals, Picosecond phenomena, Thermal effects, Image resolution

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Proceedings Article | 16 December 1996 Paper

Photorefractivity, phase conjugation, and thermal wave mixing effects in the visible and near-IR spectral region for dye and fullerence C60-doped nematic liquid crystals

Brett Guenther, Michael Wood, Iam-Choon Khoo

Proceedings Volume 2854, (1996) https://doi.org/10.1117/12.262977

KEYWORDS: Liquid crystals, Diffraction, Phase conjugation, Thermal effects, Absorption, Liquids, Fullerenes, Anisotropy, Visible radiation, Electro optics

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Proceedings Article | 7 October 1996 Paper

Isotropic liquid crystal cored fiber structures for optical limiting of nanosecond and picosecond laser pulses

Michael Wood, Ming Lee, Brett Guenther, Iam-Choon Khoo

Proceedings Volume 2853, (1996) https://doi.org/10.1117/12.253476

KEYWORDS: Absorption, Liquid crystals, Picosecond phenomena, Optical limiting, Nonlinear optics, Pulsed laser operation, Laser damage threshold, Scattering, Laser energy, Fiber lasers

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Proceedings Article | 11 March 1996 Paper

Liquid crystal photorefractivity for reordering holographic gratings

Iam-Choon Khoo

Proceedings Volume 2651, (1996) https://doi.org/10.1117/12.235363

KEYWORDS: Liquid crystals, Holography, Crystals, Dielectrics, Refractive index, Anisotropy, Diffraction gratings, Diffraction, Fullerenes, Data storage

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Proceedings Article | 8 December 1995 Paper

Nonlinear optical phenomena in fullerene-doped liquid crystal films and fibers

Iam-Choon Khoo, Hong Li, Y. Liang, Ming Lee, B. Yarnell, Kon-Well Wang, M. Wood

Proceedings Volume 2530, (1995) https://doi.org/10.1117/12.228111

KEYWORDS: Liquid crystals, Optical fibers, Diffraction gratings, Optical limiting, Crystals, Fullerenes, Holography, Absorption, Nonlinear optics, Liquids

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Proceedings Article | 18 August 1995 Paper

Photorefractivity and storage of holograhic gratings in dye- and fullerene-doped nematic liquid crystal film

Iam-Choon Khoo, Hong Li, Y. Liang, Kon-Well Wang

Proceedings Volume 2529, (1995) https://doi.org/10.1117/12.216993

KEYWORDS: Liquid crystals, Diffraction gratings, Anisotropy, Fullerenes, Diffraction, Dielectrics, Holography, Electro optics, Modulation, Crystals

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Proceedings Article | 28 April 1994 Paper

Liquid crystal nonlinear optics versus photorefractives

I. C. Khoo

Proceedings Volume 10270, 1027003 (1994) https://doi.org/10.1117/12.178625

KEYWORDS: Liquid crystals, Nonlinear optics, Crystals, Nonlinear crystals, Physics, Birefringence, Visible radiation, Far infrared, Liquids, Crystal optics

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Proceedings Article | 18 August 1992 Paper

Infrared and visible laser-induced thermal and density optical nonlinearities in nematic and isotropic liquid crystals

Robert Lindquist, Peter LoPresti, Iam-Choon Khoo

Proceedings Volume 1692, (1992) https://doi.org/10.1117/12.138057

KEYWORDS: Liquid crystals, Infrared radiation, Nonlinear optics, Switching, Thermography, Visible radiation, Pulsed laser operation, Gas lasers, Optical limiting, Thermal effects

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Proceedings Article | 18 August 1992 Paper

Broadband liquid-crystal electro-optical modulators

Iam-Choon Khoo, S. Lee

Proceedings Volume 1692, (1992) https://doi.org/10.1117/12.138056

KEYWORDS: Liquid crystals, Modulators, Scattering, Electro optics, Modulation, Optical alignment, Light scattering, Electrooptic modulators, Dynamic light scattering, Spatial frequencies

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Proceedings Article | 1 October 1990 Paper

Picosecond-millisecond optical nonlinearities of liquid crystals for limiting and switching applications

Iam-Choon Khoo, Robert Lindquist, Robert Michael, R. Mansfield, Ping Zhou, Peter LoPresti

Proceedings Volume 1307, (1990) https://doi.org/10.1117/12.21683

KEYWORDS: Liquid crystals, Sensors, Electro optical sensors, Switching, Refractive index, Electro optics, Switches, Optical coatings, Nonlinear optics, Infrared radiation

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Showing 5 of 68 publications

Proceedings Volume Editor (33)

SPIE Conference Volume | 30 September 2024

Liquid Crystals XXVIII

SPIE Conference Volume | 12 October 2023

Liquid Crystals XXVII

SPIE Conference Volume | 3 October 2022

Liquid Crystals XXVI

SPIE Conference Volume | 14 September 2021

Liquid Crystals XXV

SPIE Conference Volume | 22 September 2020

Liquid Crystals XXIV

Showing 5 of 33 publications

Conference Committee Involvement (45)

Ultrafast Nonlinear Imaging and Spectroscopy XIII

3 August 2025 | San Diego, California, United States

Liquid Crystals XXIX

3 August 2025 | San Diego, California, United States

Liquid Crystals XXVIII

18 August 2024 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy XII

18 August 2024 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy XI

21 August 2023 | San Diego, California, United States

Liquid Crystals XXVII

21 August 2023 | San Diego, California, United States

Liquid Crystals XXVI

22 August 2022 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy X

21 August 2022 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy IX

1 August 2021 | San Diego, California, United States

Liquid Crystals XXV

1 August 2021 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy VIII

24 August 2020 | Online Only, California, United States

Liquid Crystals XXIV

24 August 2020 | Online Only, California, United States

Liquid Crystals XXIII

11 August 2019 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy VII

11 August 2019 | San Diego, California, United States

Liquid Crystals XXII

19 August 2018 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy VI

19 August 2018 | San Diego, California, United States

Liquid Crystals XXI

6 August 2017 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy V

6 August 2017 | San Diego, California, United States

Liquid Crystals XX

28 August 2016 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy IV

28 August 2016 | San Diego, California, United States

Liquid Crystals XIX

9 August 2015 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy III

9 August 2015 | San Diego, California, United States

Liquid Crystals XVIII

17 August 2014 | San Diego, California, United States

Ultrafast Nonlinear Imaging and Spectroscopy II

17 August 2014 | San Diego, California, United States

Liquid Crystals XVII

25 August 2013 | San Diego, California, United States

Ultrafast Imaging and Spectroscopy

25 August 2013 | San Diego, California, United States

Liquid Crystals XVI

12 August 2012 | San Diego, California, United States

Liquid Crystals XV

21 August 2011 | San Diego, California, United States

Liquid Crystals XIV

1 August 2010 | San Diego, California, United States

Liquid Crystals XIII

2 August 2009 | San Diego, California, United States

Liquid Crystals XII

11 August 2008 | San Diego, California, United States

Liquid Crystals XI

26 August 2007 | San Diego, California, United States

Liquid Crystals X

13 August 2006 | San Diego, California, United States

Liquid Crystals IX

31 July 2005 | San Diego, California, United States

Liquid Crystals VIII

2 August 2004 | Denver, Colorado, United States

Liquid Crystal Technology Applications

7 July 2004 | Cleveland, Ohio, United States

Liquid Crystals VII

5 August 2003 | San Diego, California, United States

Liquid Crystals VI

8 July 2002 | Seattle, WA, United States

Nonlinear Optical Transmission Processes II

8 July 2002 | Seattle, WA, United States

Liquid Crystals V

29 July 2001 | San Diego, CA, United States

Power Limiting Materials and Devices II

2 August 2000 | San Diego, CA, United States

Liquid Crystals IV

2 August 2000 | San Diego, CA, United States

Liquid Crystals III

21 July 1999 | Denver, CO, United States

Liquid Crystals II

20 July 1998 | San Diego, CA, United States

Liquid Crystals

28 July 1997 | San Diego, CA, United States

Showing 5 of 45 Conference Committees

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