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Proceedings Paper

High-power laser diode and application
Author(s): Hirofumi Kan; Hirofumi Miyajima; Shinichi Furuta; Hideki Suzuki; Takayuki Uchiyama; Satoru Oishi; Takeshi Kanzaki; Teruo Hiruma
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Paper Abstract

In general, an electrical to optical power conversion efficiency for a high power LD ranges from 40 to 50%. Therefore, 50 to 60% of the input electricity is transformed into heat. The generated heat degrades the LD's optical characteristics and their lifetimes dramatically. We must not only suppress the heat generation but also remove the heat effectively from the LDs. Several years ago we proposed "FUNRYU", a water cooled heat sink. The sink has great advantages, due to its simpler structure than a micro channel cooler, in terms of cost, productivity, and water pressure.

Paper Details

Date Published: 3 March 2003
PDF: 3 pages
Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); doi: 10.1117/12.497972
Show Author Affiliations
Hirofumi Kan, Hamamatsu Photonics K.K. (Japan)
Hirofumi Miyajima, Hamamatsu Photonics K.K. (Japan)
Shinichi Furuta, Hamamatsu Photonics K.K. (Japan)
Hideki Suzuki, Hamamatsu Photonics K.K. (Japan)
Takayuki Uchiyama, Hamamatsu Photonics K.K. (Japan)
Satoru Oishi, Hamamatsu Photonics K.K. (Japan)
Takeshi Kanzaki, Hamamatsu Photonics K.K. (Japan)
Teruo Hiruma, Hamamatsu Photonics K.K. (Japan)


Published in SPIE Proceedings Vol. 4831:
First International Symposium on High-Power Laser Macroprocessing
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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