Prof. Ok-Hyun Nam Profile

Prof. Ok-Hyun Nam

Principal Research Engineer at Tech Univ of Korea

SPIE Involvement:

Author

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

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 | 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 | 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 | 7 April 1999 Paper

Lateral epitaxial overgrowth for defect-free GaN substrates

Jaime Freitas, Gennady Saparin, Ok-Hyun Nam, Tsvetanka Zheleva, Robert Davis

Proceedings Volume 3629, (1999) https://doi.org/10.1117/12.344587

KEYWORDS: Gallium nitride, Silicon, Edge emitting semiconductor lasers, Excitons, Transmission electron microscopy, Scanning electron microscopy, Remote sensing, Temperature metrology, Photomicroscopy, Fabrication

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Showing 5 of 7 publications

Conference Committee Involvement (4)

Gallium Nitride Materials and Devices VI

24 January 2011 | San Francisco, California, United States

Gallium Nitride Materials and Devices V

25 January 2010 | San Francisco, California, United States

Gallium Nitride Materials and Devices IV

26 January 2009 | San Jose, California, United States

Gallium Nitride Materials and Devices III

21 January 2008 | San Jose, California, United States

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