Patent ID: 7675674
Filing Date: 2010-03-09
Classification: A61B,H01S

Abstract:
1. A method of amplifying a polarized input beam, comprising the steps of: aligning at least four slabs spaced from adjacent slabs, each of the slabs having a thickness dimension of not more than 1 centimeter, wherein slab surfaces of the at least four slabs are placed within about 1 degree of a Brewster angle with respect to the polarized input beam, and no two of the slab surfaces are within 0.1 degree of parallel with respect to each other; optically pumping the at least four slabs; and passing the polarized input beam through the slab surfaces, wherein the polarized input beam is optically amplified in the at least four slabs, wherein half of the slab surfaces are slanted in one direction and half of the slab surfaces are slanted in an opposite direction, the opposite slanting slab surfaces being configured to control spreading of an output beam.