Dr. Cheollae Roh Profile

Dr. Cheollae Roh

at Samsung Display Co Ltd

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Author

Publications (4)

Proceedings Article | 12 March 2024 Presentation + Paper

Non-disruptive Bessel-beam array generation for high-throughput shadow mask laser patterning

Hyungsik Kim, Konstantin Mishchik, Woohyun Jung, Sunggyu Park, Kyunghan Yoo, Jekil Ryu, SeungJoo Lee, Seongho Jeong, Cheollae Roh

Proceedings Volume 12872, 1287202 (2024) https://doi.org/10.1117/12.3003603

KEYWORDS: Bessel beams, Glasses, Optical lithography, Spatial light modulators, Phase shift keying, Modulation, Beam splitters, Laser glasses, Ultrafast phenomena, Superposition

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Proceedings Article | 17 March 2023 Presentation + Paper

Stress control during ultrashort pulses laser for glass machining

Hyungsik Kim, Konstantin Mishchik, Woohyun Jung, Alexander Voronov, Jeongho Kim, Junghwa You, Seunghoon Jang, Sunggyu Park, Kyunghan Yoo, Jekil Ryu, Seongho Jeong, Cheollae Roh

Proceedings Volume 12408, 124080B (2023) https://doi.org/10.1117/12.2649949

KEYWORDS: Picosecond phenomena, Glasses, Microscopy, Bessel beams, Refractive index, Pulse signals, Ultrafast phenomena, Laser processing, Pulsed laser operation, Polarization

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Proceedings Article | 4 March 2022 Presentation + Paper

Optimization of Bessel beam optics for high-quality glass cutting

Hyungsik Kim, Konstantin Mishchik, Alexander Voronov, Jeongho Kim, Woohyun Jung, Junghwa You, Seunghoon Jang, Sunggyu Park, Kyunghan Yoo, Sangwoong Baek, Jekil Ryu, Seongho Jeong, Cheollae Roh

Proceedings Volume 11989, 1198903 (2022) https://doi.org/10.1117/12.2610573

KEYWORDS: Bessel beams, Glasses, Refractive index, Absorption, Laser cutting, Wave propagation, Microscopy, Laser processing, Gaussian beams, Pulsed laser operation

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Proceedings Article | 2 March 2020 Paper

Femtosecond laser induced ablation dynamics probing by emission and scattering spectroscopy under various vacuum conditions

Jinhong Jeun, Minok Park, Gyoowan Han, Seongho Jeong, Cheollae Roh, Costas Grigoropoulos

Proceedings Volume 11268, 112680E (2020) https://doi.org/10.1117/12.2545399

KEYWORDS: Laser scattering, Nanoparticles, Scattering, Laser ablation, Femtosecond phenomena, Emission spectroscopy, Plasma, Spectroscopy, Light scattering, Scatter measurement

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