High-power (1.1W) green (532nm) laser source based on single-pass second harmonic generation on a compact micro-optical bench

P. Q. Liu; C. Fiebig; M. Uebernickel; G. Blume; D. Feise; A. Sahm; D. Jedrzejczyk; K. Paschke; G. Erbert

doi:10.1117/12.878013

21 February 2011 High-power (1.1W) green (532nm) laser source based on single-pass second harmonic generation on a compact micro-optical bench

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

Author Affiliations +

Proceedings Volume 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X; 791704 (2011) https://doi.org/10.1117/12.878013
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

We demonstrate a compact high-power green (532nm) laser module based on single-pass second harmonic generation. The pump source is a distributed Bragg reflector tapered diode laser. The frequency conversion is achieved with a 2.5 cm long periodically poled MgO:LiNbO₃ bulk crystal. The entire module is integrated on a compact micro-optical bench with a footprint of 2.5 cm³. Up to 1.1 W output green light power is achieved at a pump power of 7.6 W with an optical conversion efficiency of about 15% and a corresponding module wall-plug efficiency of more than 4%. The green laser beam has a relatively good beam quality (measured at output power level of ~0.9 W) with M²_σ=1.8 in the vertical direction and M²=4.9 in the lateral direction, respectively. The long-term output power stability is ±10% (tested at output power level of ~0.6 W).

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P. Q. Liu, C. Fiebig, M. Uebernickel, G. Blume, D. Feise, A. Sahm, D. Jedrzejczyk, K. Paschke, and G. Erbert "High-power (1.1W) green (532nm) laser source based on single-pass second harmonic generation on a compact micro-optical bench", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 791704 (21 February 2011); https://doi.org/10.1117/12.878013

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