Interferometric Null Method for Measuring Stress-induced Birefringence

Applied Optics
G BirnbaumK Gow

Abstract

A sensitive apparatus utilizing a scanning Fabry-Perot interferometer excited by circularly polarized laser radiation is developed for measuring birefringence. A birefringent sample within the interferometer produces a difference in the resonance length for radiation polarized in two orthogonal directions. A Kerr cell properly oriented within the interferometer is used to cancel sample birefringence by adjusting the cell voltage. This adjustment is made by using the scanning interferometer as a spectrum analyzer and observing the displacement between the resonance curves associated with each polarization. The Kerr cell is calibrated in terms of the voltage required to produce a relative path retardation of lambda/2. The stress-induced birefringence in YAG, sapphire, and fused silica in the 26-75 degrees C temperature range is measured, and the accuracy and sensitivity of the instrument are assessed.

References

May 1, 1968·Applied Optics·M Hercher
May 1, 1960·Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry·J B WachtmanR P Stinchfield
Mar 1, 1970·Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry·R M Waxler, E N Farabaugh

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Citations

Nov 1, 1977·Applied Optics·A FeldmanR M Waxler
Nov 1, 1992·Applied Optics·E R Cochran, C Ai

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