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Optical Engineering

Field-of-view calculations on tunable filters designed for the selective filtering of laser radiation
Author(s): Jacqueline Staromlynska; Robert S. Seymour
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Paper Abstract

Field-of-view calculations are carried out on tunable birefringent filters designed for selective filtering of intrusive laser radiation. Two methods are used to analyze the problem-a rigorous 4 x 4 matrix method and an extended Jones matrix approximation. It is found that the extended Jones matrix approximation is sufficient to describe the filter characteristics. Using this method, the off-axis contrast ratios of low- and hig-horder filters are compared. The presented results show that although the field of view of these filters extends well beyond 10 deg, the contrast ratio in the high-order case is significantly degraded and in some cases falls below the desired value of 100:1. A proposed "wide-field" geometry improves the off-axis performance of the high-order filter.

Paper Details

Date Published: 1 April 1993
PDF: 6 pages
Opt. Eng. 32(4) doi: 10.1117/12.61201
Published in: Optical Engineering Volume 32, Issue 4
Show Author Affiliations
Jacqueline Staromlynska, DSTO Surveillance Research Lab. (Australia)
Robert S. Seymour, DSTO (Australia)

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