Correction of birefringence and thermal lensing in nonreciprocal resonators by use of a dynamic imaging mirror.
Enhanced correction of thermally induced birefringence in the presence of strong single-pass, azimuthally dependent bipolar focusing was achieved in single-rod laser oscillators by use of an adaptive optic rear mirror with image relay and aberration correction capabilities. Together with a Faraday rotator, the imaging variable radius mirror was successfully tested in stable and unstable Nd:Cr:GSGG power oscillators under variable pump power conditions from 0 to 800 W. Birefringence correction in the absence of ray retracing was achieved.
Moshe
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Non-Linear Optics Group, Electro-Optics Division, Soreq Nuclear Research center, Yavne 81800, Israel. inon@ndc.soreq.gov.il
Jackel
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