Dr. Jong Hwa Choi Profile

Dr. Jong Hwa Choi

at Agency for Defense Development

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Author

Publications (14)

Proceedings Article | 14 June 2023 Poster + Paper

Detection range performance analysis and verification of the long-wavelength infrared optical system for drones

Kwang-Woo Park, Jonghwa Choi, Jian Kang, Siyoun Choi, Kyounghoon Baek

Proceedings Volume 12533, 1253313 (2023) https://doi.org/10.1117/12.2670189

KEYWORDS: Infrared cameras, Signal to noise ratio, Cameras, Spatial frequencies, Infrared imaging, Image resolution, Modulation transfer functions, Long wavelength infrared, Sensors, Optical design

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Proceedings Article | 13 June 2023 Presentation + Paper

640 x 512 dual-band midwave and longwave infrared focal plane array at i3system

H. Lee, J. Eom, K. Kang, S. Ryu, A. Jang, J. Kim, H. Jang, H. Choi, H. Jung, S. Kim, J. Choi, Y. Kim

Proceedings Volume 12534, 125340L (2023) https://doi.org/10.1117/12.2663300

KEYWORDS: Long wavelength infrared, Mid-IR, Staring arrays, Readout integrated circuits, Infrared radiation, Quantum efficiency, Dark current, Quantum well infrared photodetectors, Infrared detectors, Electrodes

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Proceedings Article | 27 May 2022 Poster + Paper

Quantum efficiency improvement by backside pattern on resonant cavity enhanced LWIR nBn photodetectors

Ko Ku Kang, Seong Min Ryu, Tae Hee Lee, Jong Gi Kim, Ahreum Jang, Hyun Chul Jeong, Jun Ho Eom, Young Chul Kim, Hyun Jin Lee, Young Ho Kim, Han Jung, Sun Ho Kim, Jong Hwa Choi

Proceedings Volume 12107, 1210722 (2022) https://doi.org/10.1117/12.2606352

KEYWORDS: Quantum efficiency, Sensors, Long wavelength infrared, Photodetectors, Gallium antimonide, Superlattices

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Proceedings Article | 12 April 2021 Poster + Presentation + Paper

Investigation of ICP dry etching of InAs/GaSb type-II superlattice LWIR photodetector

Hyun Chul Jung, Ko Ku Kang, Seong Min Ryu, Tae Hee Lee, Jong Gi Kim, Jun Ho Eom, Young Chul Kim, Ahreum Jang, Hyun Jin Lee, Young Ho Kim, Han Jung, Sun Ho Kim, Jong Hwa Choi

Proceedings Volume 11741, 117411V (2021) https://doi.org/10.1117/12.2588043

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Proceedings Article | 12 April 2021 Poster + Presentation + Paper

Dark current improvement by an in-situ plasma treatment on type-II superlattice LWIR photodetectors

Ko-Ku Kang, Seong-Min Ryu, Tae-Hee Lee, Jong Gi Kim, Ahreum Jang, Hyun Chul Jeong, Jun-Ho Eom, Young Chul Kim, Hyun Jin Lee, Young Ho Kim, Han Jung, Sun Ho Kim, Jong Hwa Chi

Proceedings Volume 11741, 117411U (2021) https://doi.org/10.1117/12.2588041

KEYWORDS: Plasma treatment, Superlattices, Photodetectors, Long wavelength infrared, Measurement devices, Sensors, Sensor performance, Resistance, Gases, Argon

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Proceedings Article | 12 April 2021 Presentation + Paper

HOT InAs/InAsSb nBn detector development for SWaP detector

Young Ho Kim, Hyun Jin Lee, Young Chul Kim, Jun Ho Eom, Jung Son, Hyun Chul Jung, Ko Ku Kang, Seong Min Ryu, Tae Hee Lee, Jong Gi Kim, Ahreum Jang, Sun Ho Kim, Jong Hwa Choi, Han Jung

Proceedings Volume 11741, 117410Y (2021) https://doi.org/10.1117/12.2587857

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Proceedings Article | 21 October 2016 Presentation + Paper

Ray tracing simulation of aero-optical effect using multiple gradient index layer

Seul Ki Yang, Sehyun Seong, Dongok Ryu, Sug-Whan Kim, Hyeuknam Kwon, Sang-Hun Jin, Ho Jeong, Hyun Bae Kong, Jae Wan Lim, Jong Hwa Choi

Proceedings Volume 9987, 99870R (2016) https://doi.org/10.1117/12.2241399

KEYWORDS: Ray tracing, GRIN lenses, Refractive index, Geometrical optics, Computer simulations, Sapphire, Gradient-index optics, Infrared sensors, Sensors, Image sensors

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Proceedings Article | 14 May 2007 Paper

Development of mid-wave 320x256 infrared focal plane array in Korea

Jong-Hwa Choi, Sun Ho Kim, Chi Yeon Kim, Jae Won Kim, Nam Hwan Kim, Seung-Man Park, Soo-Ho Bae, Young-Ho Kim, Byung-Hyuk Kim, Min-Suk Jeoung, Han Jung

Proceedings Volume 6542, 65420H (2007) https://doi.org/10.1117/12.719120

KEYWORDS: Readout integrated circuits, Mercury cadmium telluride, Indium, Staring arrays, Photodiodes, Clocks, Thermography, Diodes, Mid-IR, Infrared radiation

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Proceedings Article | 5 December 2002 Paper

Electrochemical CdTe deposition for HgCdTe surface passivation

Jong-Hwa Choi, Hee Chul Lee

Proceedings Volume 4795, (2002) https://doi.org/10.1117/12.453820

KEYWORDS: Mercury cadmium telluride, Cadmium, Tellurium, Electrodes, Interfaces, Nitrogen, Ions, Photodiodes, Semiconducting wafers, Capacitors

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Proceedings Article | 10 October 2001 Paper

Junction formation by hydrogenation for HgCdTe diodes

Keedong Yang, Jong Hwa Choi, Soo Ho Bae, Hee Chul Lee

Proceedings Volume 4369, (2001) https://doi.org/10.1117/12.445305

KEYWORDS: Mercury cadmium telluride, Diodes, Semiconducting wafers, Plasma, Hydrogen, Mercury, Chemical species, Photodiodes, Doping, Ion implantation

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Proceedings Article | 5 April 2001 Paper

Flat micro heat pipe arrays for cooling and thermal management at the package level

J. Park, J. Choi, H. Cho, Sang Yang, J. Yoo

Proceedings Volume 4408, (2001) https://doi.org/10.1117/12.425361

KEYWORDS: Microelectronics, Liquids, Capillaries, Thermal effects, Silicon, Microfluidics, Convection, Heat flux, Glasses, Interfaces

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Proceedings Article | 17 July 2000 Paper

Surface treatment effects on the surface recombination velocity of ZnS/HgCdTe interface

Jong Hwa Choi, Hee Chul Lee, MinSung Choi

Proceedings Volume 4028, (2000) https://doi.org/10.1117/12.391752

KEYWORDS: Diodes, Mercury cadmium telluride, Etching, Interfaces, Capacitors, Electrodes, Oxides, Zinc, Resistance, Surface finishing

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Proceedings Article | 13 August 1997 Paper

New reflow process for indium bump

Young-Ho Kim, Jong Hwa Choi, Kang-Sik Choi, Hee Chul Lee, Choong-Ki Kim

Proceedings Volume 3061, (1997) https://doi.org/10.1117/12.280315

KEYWORDS: Indium, Plasma, Mercury cadmium telluride, Etching, Scanning electron microscopy, Optical spheres, Reliability, Silicon, Image processing, Indium oxide

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Proceedings Article | 30 May 1995 Paper

Dynamic fracture phenomena in glass and PMMA

J. Choi, C. Lee, S. Chang, S. Moon

Proceedings Volume 2513, (1995) https://doi.org/10.1117/12.209554

KEYWORDS: Glasses, Polymethylmethacrylate, Wave propagation, Photography, Manganese, Wavefronts, Head, Spherical lenses, High speed photography, Explosives

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Showing 5 of 14 publications

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