High-power laser diode and application

Hirofumi Kan; Hirofumi Miyajima; Shinichi Furuta; Hideki Suzuki; Takayuki Uchiyama; Satoru Oishi; Takeshi Kanzaki; Teruo Hiruma

doi:10.1117/12.497972

3 March 2003 High power laser diode and application

Hirofumi Kan, Hirofumi Miyajima, Shinichi Furuta, Hideki Suzuki, Takayuki Uchiyama, Satoru Oishi, Takeshi Kanzaki, Teruo Hiruma

Author Affiliations +

Proceedings Volume 4831, First International Symposium on High-Power Laser Macroprocessing; (2003) https://doi.org/10.1117/12.497972
Event: LAMP 2002: International Congress on Laser Advanced Materials Processing, 2002, Osaka, Japan

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.

Citation Download Citation

Hirofumi Kan, Hirofumi Miyajima, Shinichi Furuta, Hideki Suzuki, Takayuki Uchiyama, Satoru Oishi, Takeshi Kanzaki, and Teruo Hiruma "High power laser diode and application", Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); https://doi.org/10.1117/12.497972

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