Beam quality dependent SHG using edge-emitting lasers and a 50 mm bulk PPLN crystal

Mirko Uebernickel; Gunnar Blume; Christian Fiebig; Christian Kaspari; David Feise; Katrin Paschke; Arnim Ginolas; Reiner Güther; Bernd Eppich; Götz Erbert

doi:10.1117/12.807429

23 February 2009 Beam quality dependent SHG using edge-emitting lasers and a 50 mm bulk PPLN crystal

Mirko Uebernickel, Gunnar Blume, Christian Fiebig, Christian Kaspari, David Feise, Katrin Paschke, Arnim Ginolas, Reiner Güther, Bernd Eppich, Götz Erbert

Author Affiliations +

Proceedings Volume 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII; 71970F (2009) https://doi.org/10.1117/12.807429
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

In this paper we present a study of the single pass normalized second harmonic generation (SHG) conversion efficiency as a function of the beam propagation factor M² and the beam diameter in the lateral and vertical direction. It can be shown that an increase in M² results in dramatic changes for the optimal focusing conditions, in comparison to the SHG with a Gaussian beam. Based on the results of the measurements we developed a model to simulate the focusing conditions for partial coherent beams.

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Mirko Uebernickel, Gunnar Blume, Christian Fiebig, Christian Kaspari, David Feise, Katrin Paschke, Arnim Ginolas, Reiner Güther, Bernd Eppich, and Götz Erbert "Beam quality dependent SHG using edge-emitting lasers and a 50 mm bulk PPLN crystal", Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 71970F (23 February 2009); https://doi.org/10.1117/12.807429

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