Beam-quality enhancement in multi-kW rod-based lasers by use of radially polarized light and phase-front correction

Inon Moshe; Steven Jackel; Avi Meir; Yaakov Lumer; Galina Machavariani; Shai Rosenberg

doi:10.1117/12.721038

14 February 2007 Beam-quality enhancement in multi-kW rod-based lasers by use of radially polarized light and phase-front correction

Inon Moshe, Steven Jackel, Avi Meir, Yaakov Lumer, Galina Machavariani, Shai Rosenberg

Author Affiliations +

Proceedings Volume 6452, Laser Resonators and Beam Control IX; 645202 (2007) https://doi.org/10.1117/12.721038
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

We developed a Nd:YAG rod-based MOPA to generate high power in a radially-polarized beam. Two pump-chambers in the amplifier section produced 2.1kW @ M²=9.5, while three pump-chambers yielded 3.1kW @ M²=14. Efficiency in the last pump-chamber was 33%. Several techniques were utilized to enhance beam-quality: an azimuthally-polarized oscillator, special pump-chambers, external compensation of lower-order aberrations, and high-order aberration compensation by pairing pump-chambers.

Citation Download Citation

Inon Moshe, Steven Jackel, Avi Meir, Yaakov Lumer, Galina Machavariani, and Shai Rosenberg "Beam-quality enhancement in multi-kW rod-based lasers by use of radially polarized light and phase-front correction", Proc. SPIE 6452, Laser Resonators and Beam Control IX, 645202 (14 February 2007); https://doi.org/10.1117/12.721038

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