High power red laser oscillation in Pr3+-doped waterproof fluoro-aluminate glass fiber excited by a GaN laser diode

J. Nakanishi; T. Yamada; Y. Fujimoto; O. Ishii; M. Yamazaki

doi:10.1117/12.874437

3 March 2011 High power red laser oscillation in Pr³⁺-doped waterproof fluoroaluminate glass fiber excited by a GaN laser diode

J. Nakanishi, T. Yamada, Y. Fujimoto, O. Ishii, M. Yamazaki

Author Affiliations +

Proceedings Volume 7912, Solid State Lasers XX: Technology and Devices; 791226 (2011) https://doi.org/10.1117/12.874437
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

We have demonstrated a high power red fiber laser with a Pr-doped waterproof fluoro-aluminate glass fiber (Pr:WPFGF). When 800 mW pumping power of a blue/violet GaN laser diode (GaN-LD) was launched into the Pr:WPFGF (core diameter 8 μm, length 40 mm) with dielectric coating on both end surfaces to construct a resonator, the maximum output laser power at 638 nm was obtained to be 311.4 mW that is higher than previously reported Pr:ZBLAN fibers. The threshold power was evaluated to be 52.1 mW, and the slope efficiency was calculated to be 41.6%. Assuming the resonator to be a Fabry-Perot resonator, we can calculate the output power to be 336 mW at 800 mW pump power and the slop efficiency to be 44.2%. These theoretical values show good agreement with experimental ones.

Citation Download Citation

J. Nakanishi, T. Yamada, Y. Fujimoto, O. Ishii, and M. Yamazaki "High power red laser oscillation in Pr³⁺-doped waterproof fluoroaluminate glass fiber excited by a GaN laser diode", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 791226 (3 March 2011); https://doi.org/10.1117/12.874437

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