Paper
4 May 1998 650-nm-band high-power and highly reliable laser diodes with a window-mirror structure
Akihiro Shima, Misao Hironaka, Ken-ichi Ono, Masayoshi Takemi, Yoshifumi Sakamoto, Yasuhiro Kunitsugu, Koji Yamashita
Author Affiliations +
Abstract
An active layer structure with 658 nm-emission at 25 degrees Celsius has been optimized in order to reduce the operating current of the laser diodes (LD) under high temperature condition. For improvement of the maximum output power and the reliability limited by mirror degradation, we have applied a zinc-diffused-type window-mirror structure which prevents the optical absorption at the mirror facet. As a result, the CW output power of 50 mW is obtained even at 80 degrees Celsius for a 650 micrometer-long window-mirror LD. In addition, the maximum light output power over 150 mW at 25 degrees Celsius has been realized without any optical mirror damage. In the aging tests, the LDs have been operating for over 2,500 - 5,000 hours under the CW condition of 30 - 50 mW at 60 degrees Celsius. The window-mirror structure also enables reliable 60 degree Celsius, 30 mW, CW operation of the LDs with 651 nm- emission at 25 degrees Celsius. Moreover, the maximum output power of around 100 mW even at 80 degrees Celsius and reliable 2,000-hour operation at 60 degrees Celsius, 70 mW have been realized for the first time by 659 nm LDs with a long cavity length of 900 micrometers.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Akihiro Shima, Misao Hironaka, Ken-ichi Ono, Masayoshi Takemi, Yoshifumi Sakamoto, Yasuhiro Kunitsugu, and Koji Yamashita "650-nm-band high-power and highly reliable laser diodes with a window-mirror structure", Proc. SPIE 3285, Fabrication, Testing, Reliability, and Applications of Semiconductor Lasers III, (4 May 1998); https://doi.org/10.1117/12.307613
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KEYWORDS
Mirrors

Reliability

Semiconductor lasers

High power lasers

Absorption

Active optics

Continuous wave operation

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