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Optical Engineering

Nearly Polarization Preserving Dielectric Thin Film Design For A Four-Spherical-Mirror System
Author(s): Sung Hong Hahn; Sang Soo Lee
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Paper Abstract

To suppress the change in polarization of the transmitted He-Ne or CO2 laser beam through a system consisting of four spherical mirrors, a system of four separate transparent thin films is designed. Each mirror is initially coated opaquely with silver, and the transparent film for preserving the polarization state is on top of the silver substrate. The thin film designs for the system are obtained using a computer optimization process, and their stability for random thickness errors and for the change in the angle of incidence are checked. The final design obtained for a He-Ne laser beam uses TiO2 film and that for a CO2 laser beam uses PbTe film.

Paper Details

Date Published: 1 December 1989
PDF: 5 pages
Opt. Eng. 28(12) 281306 doi: 10.1117/12.7977148
Published in: Optical Engineering Volume 28, Issue 12
Show Author Affiliations
Sung Hong Hahn, Korea Advanced Institute of Science (Korea)
Sang Soo Lee, Korea Advanced Institute of Science (Korea)

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