High power multilayer stack quarter wave plate

Details High power multilayer stack quarter wave plate High power multilayer stack quarter wave plate

1992-12-17

1996-02-13

Lerner, Martin

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359249, 359487, 359578, 359584, G02B 530, G02B 528, G02B 7195, G02F 103

Patent

active

054915805

ABSTRACT:
A multilayer stack of alternating low index and high index of refraction low loss dielectric mirror layers are formed on top of a metallic mirror surface, the thicknesses of the mirror layers being chosen to satisfy the Bragg condition at a selected incident angle of polarized light. The dielectric layer adjacent the metallic reflective mirror substrate can have a thickness which produces circularly polarized light exiting the apparatus. An electro-optical layer of EO material can be substituted for the dielectric layer adjacent the metallic mirror and a controlled elliptically polarized output can be produced by altering the electric field applied across the EO layer. This device can be used as a very high power high speed EO modulator.

REFERENCES:
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patent: 4449824 (1984-05-01), Matthews
patent: 4595261 (1986-06-01), Baasch et al.
patent: 5225930 (1993-07-01), Land et al.

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