Dr. Tallis Y. Chang Profile

Dr. Tallis Y. Chang

COO at Obsidian Sensors

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Publications (11)

Proceedings Article | 13 June 2023 Presentation + Paper

Achieving unprecedented scale and cost effectiveness with microbolometers on glass

John Hong, Sean Andrews, Edward Chan, Tallis Chang, Yaoling Pan, Heesun Shin, Bing Wen

Proceedings Volume 12534, 125341E (2023) https://doi.org/10.1117/12.2666249

KEYWORDS: Readout integrated circuits, Microbolometers, Sensors, Thermography, Lamps, Glasses, Circuit switching, Microelectromechanical systems, Transistors, Cameras

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Proceedings Article | 21 November 2017 Open Access

Progress towards picometer accuracy laser metrology for the space interferometry mission

Peter Halverson, Andreas Kuhnert, Jennifer Logan, Martin Regehr, Stuart Shaklan, Robert Spero, Feng Zhao, Tallis Chang, Edouard Schmidtlin, Roman Gutierrez, Thomas VanZandt, Jeffrey Yu

Proceedings Volume 10569, 1056919 (2017) https://doi.org/10.1117/12.2307867

KEYWORDS: Metrology, Heterodyning, Interferometers, Photodiodes, Laser metrology, Beam splitters, Calibration, Interferometry, Distance measurement, Sensors

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Proceedings Article | 27 August 2008 Paper

Liquid crystal tunable polarization filters for polarization imaging

Dong-Feng Gu, Bruce Winker, Bing Wen, John Mansell, Karen Zachery, Donald Taber, Tallis Chang, Sung Choi, Jian Ma, Xiaomin Wang, Keith Sage

Proceedings Volume 7050, 70500I (2008) https://doi.org/10.1117/12.793158

KEYWORDS: Polarization, Cameras, Liquid crystals, Optical filters, Polarizers, Image sensors, Image filtering, Imaging systems, Polarimetry, Switches

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SPIE Journal Paper | 1 January 2000

Holographic multichannel radio-frequency correlator

George Sefler, Jian Ma, Tallis Chang, John Hong

OE, Vol. 39, Issue 01, (January 2000) https://doi.org/10.1117/12.10.1117/1.602367

KEYWORDS: Optical correlators, Holography, Holograms, Spatial light modulators, LCDs, Modulation, Crystals, Multiplexing, Integrated optics, Polarization

Proceedings Article | 5 November 1998 Paper

Packaged digital holographic data storage with fast access

Jian Ma, Tallis Chang, Sung Choi, John Hong

Proceedings Volume 3468, (1998) https://doi.org/10.1117/12.330411

KEYWORDS: Crystals, Digital holography, Holography, Charge-coupled devices, Distortion, Holograms, Data storage, Optical design, Laser crystals, Multiplexing

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Proceedings Article | 22 November 1996 Paper

Photonic rf processing systems

John Hong, Tallis Chang, George Sefler

Proceedings Volume 2844, (1996) https://doi.org/10.1117/12.259017

KEYWORDS: Holograms, Optical correlators, Holography, Spatial light modulators, Multiplexing, Signal processing, Acousto-optics, RF photonics, Volume holography, Telecommunications

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SPIE Journal Paper | 1 August 1995

Volume holographic memory systems: techniques and architectures

John Hong, Ian McMichael, Tallis Chang, William Christian, Eung Gi Paek

OE, Vol. 34, Issue 08, (August 1995) https://doi.org/10.1117/12.10.1117/12.213214

KEYWORDS: Multiplexing, Holography, Holograms, Data storage, Holographic data storage systems, Crystals, Fourier transforms, Volume holography, Signal to noise ratio, Detector arrays

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Proceedings Article | 30 June 1995 Paper

Fast reconfigurable optical image switching system

Eung Gi Paek, John Hong, Tallis Chang

Proceedings Volume 2481, (1995) https://doi.org/10.1117/12.212703

KEYWORDS: Switching, Acoustics, Diffraction, Acousto-optics, Image resolution, Spatial frequencies, Networks, Holography, Computer programming, Image processing

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Proceedings Article | 16 June 1995 Paper

Adaptive signal processing with photorefractive systems

John Hong, Tallis Chang

Proceedings Volume 2489, (1995) https://doi.org/10.1117/12.212042

KEYWORDS: Crystals, Signal processing, Acousto-optics, Digital filtering, Laser crystals, Modulation, Optical filters, Electronic filtering, Filtering (signal processing), Laser beam diagnostics

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Proceedings Article | 10 June 1994 Paper

Photorefractive integrator characterization

John Hong, Jeffrey Norman, Tallis Chang, Frederick Vachss, David Pletcher

Proceedings Volume 2155, (1994) https://doi.org/10.1117/12.177422

KEYWORDS: Acousto-optics, Crystals, Optical signal processing

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Proceedings Article | 2 December 1992 Paper

Dynamic range of photorefractive holograms for optical signal processing

John Hong, Tallis Chang, Frederick Vachss

Proceedings Volume 1703, (1992) https://doi.org/10.1117/12.138432

KEYWORDS: Crystals, Signal detection, Digital filtering, Laser crystals, Signal to noise ratio, Diffraction, Optical correlators, Photorefraction, Optical signal processing, Holography

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Showing 5 of 11 publications

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