1 April 1993 Field-of-view calculations on tunable filters designed for the selective filtering of laser radiation
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Optical Engineering, 32(4), (1993). doi:10.1117/12.61201
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.
Jacqueline Staromlynska, Robert S. Seymour, "Field-of-view calculations on tunable filters designed for the selective filtering of laser radiation," Optical Engineering 32(4), (1 April 1993). http://dx.doi.org/10.1117/12.61201
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KEYWORDS
Optical filters

Tunable filters

Liquid crystals

Tunable lasers

Wave plates

Birefringence

Polarizers

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