Dr. Hyunsung Ko Profile

Dr. Hyunsung Ko

at ETRI

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 14 March 2015 Paper

Portable terahertz scanner for imaging and spectroscopy using InP-related devices

Kyung Hyun Park, Namje Kim, Il-Min Lee, Kiwon Moon, Eui Su Lee, Hyunsung Ko, Won-Hui Lee, Sang-Pil Han

Proceedings Volume 9362, 93620V (2015) https://doi.org/10.1117/12.2081356

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Sensors, Antennas, Scanners, Imaging systems, Laser sintering, Principal component analysis, Diodes

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Proceedings Article | 7 March 2014 Paper

Photonic devices for tunable continuous-wave terahertz generation and detection

Kyung Hyun Park, Namje Kim, Kiwon Moon, Hyunsung Ko, Jeong-Woo Park, Eui Su Lee, Il-Min Lee, Sang-Pil Han

Proceedings Volume 8985, 898506 (2014) https://doi.org/10.1117/12.2045639

KEYWORDS: Terahertz radiation, Laser sintering, Continuous wave operation, Diodes, Waveguides, Sensors, Glasses, Semiconductors, Semiconductor lasers

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Proceedings Article | 27 March 2013 Paper

A tunable continuous-wave terahertz generator based on 1.3 μm dual-mode laser diode and travelling-wave photodiode

Han-Cheol Ryu, Namje Kim, Jung-Woo Park, Sang-Pil Han, Hyunsung Ko, Kiwon Moon, Min Yong Jeon, Kyung Hyun Park

Proceedings Volume 8624, 862407 (2013) https://doi.org/10.1117/12.2001964

KEYWORDS: Terahertz radiation, Semiconductor lasers, Photodiodes, Continuous wave operation, Laser sintering, Indium gallium arsenide, Antennas, Homodyne detection, Waveguides

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Proceedings Article | 10 October 2012 Paper

Portable guided-mode resonance biosensor platform for point-of-care testing

Gun Yong Sung, Wan-Joong Kim, Hyunsung Ko, Bong Kim, Kyung-Hyun Kim, Chul Huh, Jongcheol Hong

Proceedings Volume 8460, 84600F (2012) https://doi.org/10.1117/12.929457

KEYWORDS: Biosensors, Proteins, Vertical cavity surface emitting lasers, Refractive index, Reflectivity, Reflection, Polymers, Biological research, Sensors, Silicon

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Proceedings Article | 1 March 2012 Paper

Portable terahertz spectrometer with InP related semiconductor photonic devices

Kyung Hyun Park, Namje Kim, Hyunsung Ko, Han-Cheol Ryu, Jung-Woo Park, Sang-Pil Han, Min Yong Jeon

Proceedings Volume 8261, 826103 (2012) https://doi.org/10.1117/12.907629

KEYWORDS: Terahertz radiation, Antennas, Silicon, Phase shifts, Laser sintering, Photonic devices, Indium gallium arsenide, Spectroscopy, Continuous wave operation

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Proceedings Article | 10 October 2006 Paper

High-performance operations of sampled grating DBR lasers with optimized butt-coupling method

Su Hwan Oh, Chul-Wook Lee, Ki Soo Kim, Hyunsung Ko, Sahnggi Park, Moon-Ho Park, Ji-Myon Lee, Suhyun Kim, Youngchul Chung

Proceedings Volume 6352, 63520K (2006) https://doi.org/10.1117/12.691516

KEYWORDS: Waveguides, Semiconductor lasers, Seaborgium, Refractive index, Heterojunctions, Photons, Wavelength tuning, Tunable lasers, Cladding, Reactive ion etching

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SPIE Journal Paper | 1 January 2006

Coherent tuning of semiconductor laser wavelength

Sahnggi Park, Ki Kim, Su Oh, Hyunsung Ko, Moon-Ho Park

OE, Vol. 45, Issue 01, 014202, (January 2006) https://doi.org/10.1117/12.10.1117/1.2150380

KEYWORDS: Waveguides, Semiconductor lasers, Electrodes, Refraction, Refractive index, Electroluminescence, Spatial coherence, Wavefronts, Optical filters, Optical engineering

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SPIE Journal Paper | 1 April 2005

Distortion of Gaussian intensity profile by passing through a tilted Fabry-Perot filter

Sahnggi Park, Hyunsung Ko, Moon-Ho Park

OE, Vol. 44, Issue 04, 048001, (April 2005) https://doi.org/10.1117/12.10.1117/1.1886833

KEYWORDS: Distortion, Fabry–Perot interferometers, Gaussian filters, Optical filters, Gaussian beams, Reflectivity, Mirrors, Optical engineering, Optical design, Waveguides

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Showing 5 of 8 publications

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