Optimization of a rhomb-type quarter-wave phase retarder
- 1 June 1995
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 34 (16) , 2927-2930
- https://doi.org/10.1364/ao.34.002927
Abstract
A previously reported two-reflection, undeviating-beam total internal reflection (TIR) quarter-wave phase retarder is optimized. The specifications and characteristics of the device are sensitive to the refractive index n of the rhomb material. In particular, the size of the rhomb can be reduced by a factor of 11 for the same aperture size if a glass with n = 1.70 is used instead of one with n = 1.53. Optimal conditions are in the refractive-index interval n = 1.68–1.71. Coated rhombs of this type are mentioned.Keywords
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