Athermalization of an optical parametric oscillator

Details Athermalization of an optical parametric oscillator Athermalization of an optical parametric oscillator

2006-11-21

2006-11-21

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

Parametric oscillator

C359S326000

Reexamination Certificate

active

07139115

ABSTRACT:
A method for thermally stabilizing an optical parametric oscillator (OPO)10to maintain constant optical path length for stable high power output places a beam dump32outside an OPO cavity18. The OPO10has a nonlinear crystal22within cavity18for splitting a single input pump beam14into lower energy signal and idler beams16, 18. The method includes providing a cavity exit port for unconverted pump and generated idler beams, and absorbing unconverted beams in beam dump32. The method includes athermalization by actively cooling surfaces used as an optics mounting base, and athermalization by constraining the size of cavity18by using thermally stiff members, guiding pins or rails, or by using bimetallic materials with different expansion.

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B. Ruffing, A. Nebel and R. Wallenstein, All-solid-state cw mode-locked picosecond KTiOAsO4(KTA) optical parametric oscillator, Applied Physics B. Lasers and Optics, Springer-Verlag 1998; B 67, pp. 537-544. Universitat Kaiserslautern, Kaiserslautern, Germany.

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