Dielectric polarizer for high average and high peak power operat

Details Dielectric polarizer for high average and high peak power operat Dielectric polarizer for high average and high peak power operat

1982-10-13

1985-05-07

Corbin, John K.

350164, G02B 530

Patent

active

045154414

ABSTRACT:
A dielectric optical polarizer which is operable at high peak and average power, with greater than 95 percent transmission of the desired P polarized radiation, and also greater than 95 percent reflectance of the S polarized radiation. The polarizer comprises a radiation transmissive substrate with a first dielectric layer disposed on at least one side of the substrate. The first dielectric layer has an index of refraction higher than the substrate. A second dielectric layer of low index of refraction material is disposed atop the first dielectric layer. A third dielectric layer of the same high index of refraction material as the first layer, is disposed atop the second layer. Each of the dielectric layers is one quarter wavelength thick at the operating wavelength. The dielectric polarizer operates at a very high Brewster angle associated with the dielectric layers rather than that of the substrate.

REFERENCES:
patent: 4179190 (1979-12-01), Friedman et al.
patent: 4229066 (1980-10-01), Rancourt et al.
patent: 4461532 (1984-07-01), Sato et al.

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