Dr. Pak S. Cho Profile

Dr. Pak S. Cho

Physicist at CeLight Inc

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Author

Publications (8)

Proceedings Article | 4 June 2011 Paper

Investigation of standoff explosives detection via photothermal/photoacoustic interferometry

Pak Cho, Robert Jones, Timothy Shuman, Daniel Scoglietti, Geof Harston

Proceedings Volume 8018, 80181T (2011) https://doi.org/10.1117/12.883027

KEYWORDS: Laser beam diagnostics, Raman spectroscopy, Explosives, Absorption, Quantum cascade lasers, Interferometry, Acoustics, Pulsed laser operation, Optical parametric oscillators, Phase shifts

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Proceedings Article | 9 May 2009 Paper

Optical homodyne RZ-QPSK transmission through wind tunnel at 3.8 and 1.55 micron via wavelength conversion

Pak Cho, Geof Harston, Kai-Daniel Büchter, David Soreide, Jonathan Saint Clair, Wolfgang Sohler, Yaakov Achiam, Isaac Shpantzer

Proceedings Volume 7324, 73240A (2009) https://doi.org/10.1117/12.810498

KEYWORDS: Turbulence, Scintillation, Receivers, Homodyne detection, Signal to noise ratio, Mid-IR, Wave propagation, Transmitters, Atmospheric propagation, Signal detection

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Proceedings Article | 7 May 2009 Paper

Mitigation of weak and strong turbulence-induced fading in optical homodyne RZ-QPSK via delay-diversity transmission

Pak Cho, Geof Harston, David Soreide, Jonathan Saint Clair, Yaakov Achiam, Isaac Shpantzer

Proceedings Volume 7324, 73240M (2009) https://doi.org/10.1117/12.810503

KEYWORDS: Polarization, Turbulence, Signal to noise ratio, Signal detection, Homodyne detection, Scintillation, Receivers, Modulators, Transmitters, Forward error correction

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Proceedings Article | 15 September 2004 Paper

Improvement of coherent homodyne detection performance using time-gated amplification and LiNbO3 optical 90o hybrid

Pak Cho, Geof Harston, Chris Kerr, Art Greenblatt, Arkady Kaplan, Yaakov Achiam, Isaac Shpantzer

Proceedings Volume 5403, (2004) https://doi.org/10.1117/12.541569

KEYWORDS: Eye, Receivers, Signal detection, Signal to noise ratio, Homodyne detection, Interference (communication), Sensors, Picosecond phenomena, Continuous wave operation

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Proceedings Article | 10 August 2004 Paper

Demonstration of high-spectral-efficiency 40-Gb/s optical communications system using 4 bits per symbol coding

Pak Cho, Geof Harston, Chris Kerr, Art Greenblatt, Arkady Kaplan, Yaakov Achiam, Guy Levy-Yurista, Moti Margalit, Yoav Gross, Jacob Khurgin

Proceedings Volume 5440, (2004) https://doi.org/10.1117/12.541574

KEYWORDS: Modulators, Polarization, Phase shifts, Optical filters, Modulation, Dense wavelength division multiplexing, Phase modulation, Phase shift keying, Optical modulators, Hybrid optics

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Proceedings Article | 9 June 1993 Paper

Photoconductive measurements on P-type 6H-SiC

Stephen Saddow, Pak Cho, Julius Goldhar, John Palmour, Chi Lee

Proceedings Volume 1873, (1993) https://doi.org/10.1117/12.146557

KEYWORDS: Switches, Silicon carbide, Switching, Photovoltaics, Solar energy, Resistance, Electrodes, Absorption, Optoelectronics, Ultraviolet radiation

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Proceedings Article | 9 June 1993 Paper

Recent progress in photoconductive opening switch research at the University of Maryland

Eric Funk, Pak Cho, Ping-Tong Ho, Julius Goldhar, Chi Lee

Proceedings Volume 1873, (1993) https://doi.org/10.1117/12.146553

KEYWORDS: Switches, Pulsed laser operation, Gallium arsenide, Switching, Absorption, Pulsed power, Computer simulations, Laser systems engineering, Dye lasers, Pulse shaping

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Proceedings Article | 12 May 1992 Paper

Recent advances in research on photoconductive power switching at the University of Maryland

Eric Funk, Pak Cho, Chun Kung, Eve Chauchard, M. Rhee, Ping-Tong Ho, Julius Goldhar, Chi Lee

Proceedings Volume 1632, (1992) https://doi.org/10.1117/12.59074

KEYWORDS: Switches, Switching, Pulsed laser operation, Absorption, Numerical simulations, Electrodes, Crystals, Resistors, Gallium arsenide, Surface finishing

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Showing 5 of 8 publications

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