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1 W at 490 nm on a compact micro-optical bench by single-pass second harmonic generation

C. Fiebig, G. Blume, D. Feise, D. Jedrzejczyk, A. Sahm, M. Uebernickel, K. Paschke, and G. Erbert

Published in:

Proc. SPIE, vol. 7582, no. 75821O (2010).

Abstract:

We demonstrate a compact 1 W laser module at 490 nm using a Distributed Bragg Reflector tapered diode laser in single-path second harmonic generation (SHG) configuration. The frequency conversion is performed with a 3 cm periodically poled MgO:LiNbO3 crystal on a micro-optical bench having a footprint of 2.5 cm3. 1 W blue light could be achieved at a pump power of about 9.5 W resulting in an optical conversion efficiency of about 10 %. The output power stability is better than ± 2% and the blue laser beam shows an excellent beam quality of M2σ = 1.2 in vertical and M2σ = 2 in lateral direction, respectively.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, 12489 Berlin, Germany

Keywords:

Second Harmonic Generation, DBR tapered laser, PPLN.

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