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Simple method for reducing the depolarisation loss due to thermally-induced birefringence in solid-state lasers

By W.A. Clarkson, N.S. Felgate and D.C. Hanna


A simple technique for reducing the loss due to depolarisation resulting from thermally-induced stress-birefringence in solid-state lasers is reported, which uses a single, htracavity quarter-wave plate with its fast or slow axis aligned parallel to the preferred plane of polarisation defined by an intracavity polariser. This technique has been applied to a diode-bar-pumped Nd:YAG laser operating at 946µm, resulting in a measured reduction in the depolarisation loss from ~1.7% to ~0.0006% and yielding a diffraction-limited, TEMoo linearly-polarised output power of 2.9W for an incident pump power of 14.3W

Topics: QC, TK
Year: 1999
OAI identifier:
Provided by: e-Prints Soton

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