Optical parametric oscillators with high pulse energy and beam quality

Gunnar Rustad; Øystein Farsund; Gunnar Arisholm

doi:10.1117/12.854958

17 May 2010 Optical parametric oscillators with high pulse energy and beam quality

Gunnar Rustad, Øystein Farsund, Gunnar Arisholm

Proceedings Volume 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers; 77210J (2010) https://doi.org/10.1117/12.854958
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

A new method for obtaining high beam quality from high pulse energy optical parametric oscillators (OPOs) is demonstrated. By using different nonlinear crystals that have walk-off in orthogonal directions but are type 2 phase matched for the same interaction, the strong beam asymmetry that is common in critically type 2 phase matched OPOs is removed. Experimentally, this was demonstrated by adding BBO crystals to a type 2 phase matched KTA OPO, where the beam quality improved from M² ≈ 2 x 12 in the KTA OPO to M² ≈ 2 x 2 from the KTA-BBO OPO.

Citation Download Citation

Gunnar Rustad, Øystein Farsund, and Gunnar Arisholm "Optical parametric oscillators with high pulse energy and beam quality", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77210J (17 May 2010); https://doi.org/10.1117/12.854958

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