Zig-zag laser amplifier with polarization controlled reflectors

Details Zig-zag laser amplifier with polarization controlled reflectors Zig-zag laser amplifier with polarization controlled reflectors

2006-10-17

2006-10-17

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Modulation

C372S025000, C372S106000, C372S029016, C372S029020, C372S029023, C372S033000, C372S066000, C359S337000

Reexamination Certificate

active

07123634

ABSTRACT:
A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex evanescent coating that provides a selected phase retardance that results in minimization of depolarization. Without use of the complex coating, small changes in incidence angles can result in phase retardance changes large enough to increase depolarization significantly, especially when the amplifier is operated at higher powers. Appropriate selection of the complex evanescent coating allows a desired phase retardance angle to be maintained relatively constant over a small range of angles of incidence, at a given wavelength, and therefore permits minimization of depolarization and birefringence effects.

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