Novel external CW frequency doubling of semiconductor lasers to generate 488 nm

Alexander Kachanov; Boris Kharlamov; Sze Tan; Barbara A. Paldus

doi:10.1117/12.602529

27 April 2005 Novel external CW frequency doubling of semiconductor lasers to generate 488 nm

Alexander Kachanov, Boris Kharlamov, Sze Tan, Barbara A. Paldus

Proceedings Volume 5707, Solid State Lasers XIV: Technology and Devices; (2005) https://doi.org/10.1117/12.602529
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

We report a simple and compact all-solid-state laser generating 488 nm light with continuously variable output power in the range from 1 mW to over 120 mW. We frequency double single frequency radiation from an external cavity semiconductor laser in a periodically poled MgO:LiNbO₃ ridge waveguide. The laser maintains a high quality TEM₀₀ circular beam with M² < 1.1 and very low r.m.s. noise of less than 0.06% over the entire range of output power. Less than 0.1% peak-to-peak output power variation was measured during 14 hours of operation. No degradation of the conversion efficiency has been observed for operation at an output power of 70 mW for 3.5 months. The prototype laser has a small footprint of 5x8 cm.

Citation Download Citation

Alexander Kachanov, Boris Kharlamov, Sze Tan, and Barbara A. Paldus "Novel external CW frequency doubling of semiconductor lasers to generate 488 nm", Proc. SPIE 5707, Solid State Lasers XIV: Technology and Devices, (27 April 2005); https://doi.org/10.1117/12.602529

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