Dr. Ju Hyeon Choi Profile

Dr. Ju Hyeon Choi

Chief Researcher at Korea Photonics Technology Institute

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 3 October 2024 Poster + Paper

Study of eco-friendly chalcogenide glass compositions for infrared optical lens of smart devices

Tae Yeon Lee, Seon Hoon Kim, Jung-Hwan In, So Young Kim, Karam Han, Joonyoung Park, Ju Hyeon Choi

Proceedings Volume 13145, 131450E (2024) https://doi.org/10.1117/12.3026163

KEYWORDS: Chalcogenide glass, Glasses, Infrared radiation, Infrared lenses, Refractive index, Chalcogenides, Transmittance

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Proceedings Article | 2 October 2024 Poster + Paper

High-efficiency plasmonic filter-based microlens array for multispectral infrared sensor

Jehwan Hwang, Wonbae Sohn, Soyoung Kim, Junghwan In, Seonhoon Kim, Doo Gun Kim, Ju Hyeon Choi

Proceedings Volume 13111, 131110B (2024) https://doi.org/10.1117/12.3028032

KEYWORDS: Microlens array, Optical filters, Infrared sensors, Tunable filters, Quantum plasmonics, Quantum efficiency, Nanostructures, Infrared radiation, Infrared imaging, Quantum sensors

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Proceedings Article | 30 September 2024 Poster + Paper

Development of hot-zone structure for LiTaO3 single crystal growth by simulation

Wonbae Sohn, Yong jun Kim, Su Jong Jeon, Joon Hyuk Kang, Ju Choi, Jung-Hwan In, So Young Kim, Karam Han, Jehwan Hwang, Seon Hoon Kim

Proceedings Volume 13140, 131400H (2024) https://doi.org/10.1117/12.3025329

KEYWORDS: Crystals, Nonlinear crystals, Iridium, Structural design, Photonic crystals, Optical surfaces, Optical properties, Lithium, Electrical properties, Crystallography

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Proceedings Article | 30 September 2024 Poster + Paper

Low-temperature synthesis of lithium tantalate powders for single crystal growth

Wonbae Sohn, Yong jun Kim, Su Jong Jeon, Joon Hyuk Kang, Ju Choi, Jung-Hwan In, So Young Kim, Karam Han, Jehwan Hwang, Seon Hoon Kim

Proceedings Volume 13140, 131400G (2024) https://doi.org/10.1117/12.3026877

KEYWORDS: Crystals, Solids, Combustion

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Proceedings Article | 14 March 2023 Poster + Paper

Development of hybrid optical coating with multifunction of UV-VIS absorption, NIR transmission, mechanical hardness, and easy cleanability for automotive LiDAR window

Jung-Hwan In, Seon Hoon Kim, Ju Hyeon Choi

Proceedings Volume 12417, 124171B (2023) https://doi.org/10.1117/12.2665010

KEYWORDS: Coating, LIDAR, Windows, Silicon, Transmittance, Near infrared, Refractive index, Light absorption, Glasses, Visible radiation

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Proceedings Article | 30 September 2022 Poster + Paper

Study of Ge-As-Se system with high refractive index for infrared glass molded lens

Seon Hoon Kim, Taeyeon Lee, Soyoung Kim, Karam Han, Jung-Hwan In, Doo Gun Kim, Ju Hyeon Choi

Proceedings Volume 12234, 122340F (2022) https://doi.org/10.1117/12.2632956

KEYWORDS: Glasses, Germanium, Refractive index, Infrared lenses, Selenium, Glass molding, Infrared radiation, Thermography, Temperature metrology, Infrared imaging

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Proceedings Article | 30 September 2022 Paper

Development of sealing glass and fiber type sealant for laser sealing

So Young Kim, Ka Ram Han, Seon Hoon Kim, Ju Hyeon Choi

Proceedings Volume 12231, 122310I (2022) https://doi.org/10.1117/12.2632566

KEYWORDS: Glasses, Sodium, Fiber lasers, Absorption, Packaging, Transmittance, Laser applications

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Proceedings Article | 9 September 2019 Presentation + Paper

Germanium window with highly durable diamond-like carbon coating for infrared camera of automobile

Jung H. In, Min W. Seo, Haeng Y. Jung, Seon H. Kim, Ju H. Choi

Proceedings Volume 11129, 111290H (2019) https://doi.org/10.1117/12.2529690

KEYWORDS: Germanium, Thin films, Coating, Infrared cameras, Methane, Long wavelength infrared, Carbon, Transmittance, Infrared radiation

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Proceedings Article | 14 September 2018 Paper

Thermal and mechanical properties of tellurite glasses for mid-IR molded glass lens applications

Linganna K., Jung-Hwan In, June Park, Ju H. Choi

Proceedings Volume 10742, 107421L (2018) https://doi.org/10.1117/12.2320438

KEYWORDS: Thermal analysis, Glasses, Mid-IR, Glass molding

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Proceedings Article | 4 September 2018 Presentation + Paper

Spectroscopic properties of Er3+/Yb3+ co-doped fluorophosphate glasses for optical device applications

K. Linganna, G.L. Agawane, Jung-Hwan In, June Park, Ju-H. Choi

Proceedings Volume 10755, 1075503 (2018) https://doi.org/10.1117/12.2320420

KEYWORDS: Glasses, Ytterbium, Erbium, Ions, Luminescence, Upconversion, Absorption, Spectroscopy

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Proceedings Article | 31 October 2014 Paper

Chalcogenide glass with good thermal stability for the application of molded infrared lens

Ju Hyeon Choi, Young Jun Jang, Du Hwan Cha, Jeong-Ho Kim, Hye-Jeong Kim

Proceedings Volume 9253, 925310 (2014) https://doi.org/10.1117/12.2068005

KEYWORDS: Chalcogenide glass, Glasses, Infrared lenses, Infrared radiation, Thermography, Glass molding, Germanium, Precision glass molding, Photonics, Chalcogenides

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Proceedings Article | 18 March 2014 Paper

Development of chalcogenide glass with thermal stability for molded infrared lens

Ju Choi, Du Hwan Cha, Hee Young Kang, Jeong-Ho Kim, Hye-Jeong Kim

Proceedings Volume 8982, 89821U (2014) https://doi.org/10.1117/12.2038341

KEYWORDS: Glasses, Chalcogenide glass, Infrared lenses, Germanium, Thermography, Crystals, Infrared radiation, Selenium, Antimony, Chalcogenides

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Proceedings Article | 26 September 2013 Paper

Piezoelectricity of ZnO nano-rods array prepared by hydrothermal method

Seon Hoon Kim, Tae Un Kim, Hyun Chul Ki, Doo Gun Kim, Ju Hyun Choi, Jin Hyeok Kim

Proceedings Volume 8816, 88161I (2013) https://doi.org/10.1117/12.2024972

KEYWORDS: Zinc oxide, Nanolithography, Lithography, Sensors, Photonics, Nanostructures, Zinc, Scanning electron microscopy, X-rays, Nanorods

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Proceedings Article | 11 September 2013 Paper

Synthesis of core-shell Y2O3 nanoparticles for enhanced luminescence efficiency

Ju Choi, Jae Hyun, Ki Kim, Jae Kim

Proceedings Volume 8808, 88081N (2013) https://doi.org/10.1117/12.2023781

KEYWORDS: Nanoparticles, Luminescence, Crystals, Dysprosium, Europium, Terbium, Ions, Sol-gels, Transmission electron microscopy, Energy transfer

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Proceedings Article | 19 October 2006 Paper

Noble metal nanoparticle arrays: control of size, shape, and placement via chemical self-assembly

Ju Choi, George Saddiqi, Jere Wilson, Regina Ragan

Proceedings Volume 6370, 637010 (2006) https://doi.org/10.1117/12.688409

KEYWORDS: Nanoparticles, Polymethylmethacrylate, Thin films, Metals, Gold, Silver, Polymers, Scanning electron microscopy, Atomic force microscopy, Silicon

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