Paper
1 May 2001 Improving the beam quality of nanosecond optical parametric oscillators
Author Affiliations +
Abstract
We show by computer simulation that high beam quality can be achieved in high energy, nanosecond optical parametric oscillators by using image-rotating resonators. Lateral walk off between the signal and idler beams in the nonlinear crystal creates correlations across the beams in the walk off direction, or equivalently, a restricted acceptance angle. This tends to improve beam quality in the walk off plane. We show that image rotation or reflection can be used to improve beam quality in both planes. The lateral walk off can be due to birefringent walk off in type II mixing or due to noncolinear mixing in type I or type II mixing.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arlee V. Smith "Improving the beam quality of nanosecond optical parametric oscillators", Proc. SPIE 4268, Growth, Fabrication, Devices, and Applications of Laser and Nonlinear Materials, (1 May 2001); https://doi.org/10.1117/12.424622
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KEYWORDS
Optical parametric oscillators

Crystals

Image quality

Resonators

Prisms

Nonlinear crystals

Laser crystals

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