High-power single emitters for fiber laser pumping across 8xx nm-9xx nm wavelength bands

Moshe Levy; Noam Rappaport; Genadi Klumel; Moshe Shamay; Renana Tessler; Dan Yanson; Shalom Cohen; Yaroslav Don; Yoram Karni

doi:10.1117/12.909016

8 February 2012 High-power single emitters for fiber laser pumping across 8xx nm-9xx nm wavelength bands

Moshe Levy, Noam Rappaport, Genadi Klumel, Moshe Shamay, Renana Tessler, Dan Yanson, Shalom Cohen, Yaroslav Don, Yoram Karni

Author Affiliations +

Proceedings Volume 8241, High-Power Diode Laser Technology and Applications X; 82410A (2012) https://doi.org/10.1117/12.909016
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Fiber lasers require diode laser pumps of ever increasing power and brightness delivered via low-NA multimode fiber. The preferred fiber pump construction is based on the combination of the outputs of several diode lasers (single emitters) in single-strand multimode delivery fiber with NA ≤ 0.15. We report on the recent advances in the reliability and output power of single emitters at several wavelengths from 800 nm to 980 nm, with an emitting aperture optimized for coupling into 105 μm core fiber. By the use of long laser cavities and low-loss epitaxal design, we have achieved single emitter powers close to 20 W. Lifetest data from these emitters under high optical load are presented and analyzed using a reliability model.

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Moshe Levy, Noam Rappaport, Genadi Klumel, Moshe Shamay, Renana Tessler, Dan Yanson, Shalom Cohen, Yaroslav Don, and Yoram Karni "High-power single emitters for fiber laser pumping across 8xx nm-9xx nm wavelength bands", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 82410A (8 February 2012); https://doi.org/10.1117/12.909016

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