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Proceedings Article

Reliability of high performance 9xx-nm single emitter laser diodes

[+] Author Affiliations
Ling Bao, Jun Wang, Mark Devito, Dapeng Xu, Damian Wise, Paul Leisher, Mike Grimshaw, Weimin Dong, Shiguo Zhang, Kirk Price, Daming Li, Chendong Bai, Steve Patterson, Rob Martinsen

nLIGHT Corp. (USA)

Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 758302 (February 17, 2010); doi:10.1117/12.842856
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From Conference Volume 7583

  • High-Power Diode Laser Technology and Applications VIII
  • Mark S. Zediker
  • San Francisco, California, USA | January 23, 2010

abstract

This paper presents reliable high power and high brightness 9xx-nm single emitter laser diodes, which have been designed for various multi-emitter fiber-coupled modules. Diode lasers from legend generation have been life-tested with currents up to 14A at heat-sink and junction temperatures of 50°C and 80°C respectively, and have accumulated more than 15,000 hours of life-test duration. In order to further improve reliable operational power and optimize beam quality, new generation devices have been developed. The new devices demonstrated more than 20W CW rollover power without catastrophic optical mirror damage (COMD). Near-field/far-field patterns have also been improved significantly. In addition to step-stress life-tests, a 7-level multi-cell life-test was designed to investigate acceleration factors relative to the operation conditions. Junction temperatures ranging from 60°C to 110°C and current from 14A to 18A were used in this multi-cell life-test. The ongoing multi-cell life-test has accumulated 1.3 million raw device hours and shown very few device failures in up to 7000 hours duration. Such a low failure rate doesn't allow a meaningful estimation of acceleration factors. When nominal acceleration factors are used, multi-cell life-test data supports ~500 FIT, with 90% confidence, at 10W, 33°C/50°C heat-sink/junction temperatures.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Ling Bao ; Jun Wang ; Mark Devito ; Dapeng Xu ; Damian Wise, et al.
"Reliability of high performance 9xx-nm single emitter laser diodes", Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 758302 (February 17, 2010); doi:10.1117/12.842856; http://dx.doi.org/10.1117/12.842856


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