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Proceedings Paper

Optical parametric oscillators with high pulse energy and beam quality
Author(s): Gunnar Rustad; Øystein Farsund; Gunnar Arisholm
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Paper 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.

Paper Details

Date Published: 17 May 2010
PDF: 7 pages
Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77210J (17 May 2010); doi: 10.1117/12.854958
Show Author Affiliations
Gunnar Rustad, Norwegian Defense Research Establishment (Norway)
Øystein Farsund, Norwegian Defense Research Establishment (Norway)
Gunnar Arisholm, Norwegian Defense Research Establishment (Norway)

Published in SPIE Proceedings Vol. 7721:
Solid State Lasers and Amplifiers IV, and High-Power Lasers
Thomas Graf; Gerhard G. Paulus; Jacob I. Mackenzie; Vincent Bagnoud; Catherine Le Blanc; Helena Jelinková, Editor(s)

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