Prof. Han-Youl Ryu Profile

Prof. Han-Youl Ryu

Professor at Inha Univ

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Author

Publications (13)

Proceedings Article | 4 March 2011 Paper

An efficiency droop model of the saturated radiative recombination rate and its verification by radiative and nonradiative carrier lifetime measurements in InGaN-based light emitting diodes

Jong-In Shim, Hyunsung Kim, Dong-Soo Shin, Han-Youl Ryu

Proceedings Volume 7939, 79391A (2011) https://doi.org/10.1117/12.874304

KEYWORDS: Quantum wells, Light emitting diodes, Electrons, Indium gallium nitride, Electroluminescence, Temperature metrology, Green light emitting diodes, Internal quantum efficiency, Optical testing, Luminescence

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Proceedings Article | 4 March 2011 Paper

Inhomogeneous carrier distribution in InGaN multiple quantum wells and its influences on device performances

Han-Youl Ryu, Jong-In Shim

Proceedings Volume 7939, 79390N (2011) https://doi.org/10.1117/12.874105

KEYWORDS: Quantum wells, Light emitting diodes, Indium gallium nitride, Polarization, Electrons, Electroluminescence, Gallium nitride, Numerical simulations, Blue light emitting diodes, Quantum dots

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Proceedings Article | 8 February 2007 Paper

Recent achievements of AlInGaN based laser diodes in blue and green wavelength

T. Jang, O. H. Nam, K. Ha, S. Lee, J. Son, H. Ryu, K. Kim, H. Paek, Y. Sung, H. Kim, S. Chae, Y. Kim, Y. Park

Proceedings Volume 6473, 64730X (2007) https://doi.org/10.1117/12.702998

KEYWORDS: Quantum wells, Gallium nitride, Continuous wave operation, Indium gallium nitride, Semiconductor lasers, Annealing, Diodes, Quantum efficiency, Transmission electron microscopy, Projection systems

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Proceedings Article | 6 October 2006 Paper

Waveguide structural effect on ripples of far-field pattern in 405-nm GaN-based laser diodes

Sungmin Hwang, Jongin Shim, Hanyoul Ryu, Kyung-ho Ha, Junghye Chae, Okhyun Nam

Proceedings Volume 6352, 63521J (2006) https://doi.org/10.1117/12.691215

KEYWORDS: Waveguides, Semiconductor lasers, Gallium, Refractive index, Gallium nitride, Aluminum, Near field optics, Cladding, Active optics, Waveguide modes

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Proceedings Article | 6 October 2006 Paper

Recent progress of high-power InGaN blue-violet laser diodes

H. Ryu, K. Ha, S. Lee, K. Choi, T. Jang, J. Son, H. Kim, J. Chae, H. Paek, Y. Sung, T. Sakong, K. Kim, O. Nam, Y. Park

Proceedings Volume 6352, 63521I (2006) https://doi.org/10.1117/12.691128

KEYWORDS: Quantum wells, Indium gallium nitride, Aluminum, Temperature metrology, Gallium nitride, Semiconductor lasers, Superlattices, Near field optics, Continuous wave operation

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Proceedings Article | 3 March 2006 Paper

Increase of output power and lifetime by improving the heat dissipation of GaN-based laser diodes

Jung-Hye Chae, Han-Youl Ryu, Kyu-Sang Kim, Kyoung-Ho Ha, Suhee Chae, Hyungkun Kim, Sung-Nam Lee, Kwang-Ki Choi, Taehoon Jang, Joong-Kon Son, Ho-Sun Baek, Youn-Joon Sung, Sakong Tan, Younhee Kim, Ok-Hyun Nam, Yong-Jo Park

Proceedings Volume 6121, 61210Y (2006) https://doi.org/10.1117/12.647332

KEYWORDS: Semiconductor lasers, Sapphire, Temperature metrology, Light sources, Indium gallium nitride, Waveguide lasers, Waveguides, Metalorganic chemical vapor deposition, Gallium nitride, Aluminum nitride

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Proceedings Article | 22 February 2006 Paper

High power AlInGaN-based blue-violet laser diodes

O. H. Nam, K. H. Ha, H. Y. Ryu, S. N. Lee, T. H. Chang, K. K. Choi, J. K. Son, J. H. Chae, S. H. Chae, H. S. Paek, Y. J. Sung, T. Sakong, H. G. Kim, H. S. Kim, Y. H. Kim, Y. J. Park

Proceedings Volume 6133, 61330N (2006) https://doi.org/10.1117/12.645579

KEYWORDS: Aluminum, Semiconductor lasers, Electron beam lithography, Near field optics, Gallium nitride, Superlattices, Near field, Magnesium, High power lasers, Gallium

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Proceedings Article | 1 April 2005 Paper

Measurement of junction temperature in GaN-based laser diodes using voltage-temperature characteristics

Han-Youl Ryu, Kyoung-Ho Ha, Jung-Hye Chae, Ok-Hyun Nam, Yong-Jo Park

Proceedings Volume 5738, (2005) https://doi.org/10.1117/12.590240

KEYWORDS: Temperature metrology, Gallium nitride, Sapphire, Semiconductor lasers, Continuous wave operation, Indium gallium nitride, Optical testing, Superlattices, Pulsed laser operation

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Proceedings Article | 14 June 2004 Paper

High-Q whispering-gallery mode in the photonic crystal hexagonal cavity

Han-Youl Ryu, Masaya Notomi, Yong-Hee Lee, Guk-Hyun Kim, G. Song

Proceedings Volume 5356, (2004) https://doi.org/10.1117/12.532297

KEYWORDS: Photonic crystals, Finite-difference time-domain method, Optical components, Photonic integrated circuits, Solids, Optical filters, Physics, Nonlinear filtering, Refractive index, Quantum electrodynamics

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Proceedings Article | 25 March 2004 Paper

Toward the smallest possible photonic crystal lasers

Yong Hee Lee, Han-Yeol Ryu, Hong-Gyu Park, Se-Heon Kim, Masaya Notomi

Proceedings Volume 5277, (2004) https://doi.org/10.1117/12.528471

KEYWORDS: Photonic crystals, Photons, Laser crystals, Resonators, Crystals, Quantum wells, Indium gallium arsenide, Laser applications, Laser resonators, Laser damage threshold

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Proceedings Article | 20 October 2003 Paper

Active photonic crystal devices in III-V semiconductors

Yong-Hee Lee, Han-Youl Ryu, Hong-Gyu Park, Sung Kwon, Sang-Hoon Kim

Proceedings Volume 5225, (2003) https://doi.org/10.1117/12.507872

KEYWORDS: Photonic crystals, Photons, Photonic crystal devices, Semiconductor lasers, Laser crystals, Resonators, Semiconductors, Crystals, Laser damage threshold, Laser resonators

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Proceedings Article | 25 April 2002 Paper

Two-dimensional square lattice photonic-bandgap single-cell laser

Han-Youl Ryu, Se-Heon Kim, Hong-Gyu Park, Yong-Hee Lee

Proceedings Volume 4655, (2002) https://doi.org/10.1117/12.463871

KEYWORDS: Photonic crystals, Laser damage threshold, Finite-difference time-domain method, Laser crystals, Spectroscopy, Modes of laser operation, Magnetism, Photonic crystal devices, Laser applications, Refractive index

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Proceedings Article | 19 April 2000 Paper

Two-dimensional photonic bandgap nanocavity lasers

Jeong-Ki Hwang, Han-Youl Ryu, Yong-Hee Lee

Proceedings Volume 3950, (2000) https://doi.org/10.1117/12.382163

KEYWORDS: Quantum wells, Photons, Semiconducting wafers, Polarization, Dielectric polarization, Photonic nanostructures, Optical pumping, Photonic crystals, Polarizers, Metalorganic chemical vapor deposition

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Showing 5 of 13 publications

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