Waveplate for correcting thermally induced stress birefringence

Details Waveplate for correcting thermally induced stress birefringence Waveplate for correcting thermally induced stress birefringence

1981-03-13

1983-10-04

Davie, James W.

Coherent light generators

Particular resonant cavity

Specified cavity component

372105, 372 21, 372 33, 372 93, H01S 308

Patent

active

044083343

ABSTRACT:
Thermally induced stress birefringence in laser resonators is eliminated by inserting a waveplate in the resonating cavity. The waveplate is chosen by matching its polarization transmission matrix to the polarization transmission matrices of the laser rod and a Porro prism used as an end reflector in the resonating cavity. This produces a total polarization transmission matrix in the resonating cavity which is independent of ray coordinates. Additional control of the polarization transmission matrix is provided using a Porro prism as a cavity reflector that has an antireflection coating on its roof to change the required phase advance angle of the waveplate.

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"Dual--Polarized Ring Lasers", Sanders et al., IEEE Jour. of Quanl. Elect., vol. QE--13, No. 9, Sept. 1977.
"Polarization Properties of Corner Reflectors and Cavities", by Peck, Journal of the Optical Society of America, vol. 52, No. 3, Mar. 1962.

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