Patent ID: 9343866
Filing Date: 2016-05-17
CPC Classification: H01S

Claim Text:
1. An optical pumping structure for lasers comprising: an active medium in the form of a cylindrical rod with a circular cross-section, said cylindrical rod being inserted at its ends into two rings to cover the ends, separated from each other and arranged to fully expose the cylindrical rod along a length in between said two rings, said two rings made of a thermally conductive material configured to extract heat generated by the cylindrical rod by conduction; at least three stacks of pumping diode strips arranged in the form of a star around the cylindrical rod; and a support temperature-regulated by a Peltier-effect module, wherein the two rings are in contact with the support, and wherein a stack of diodes, being a bottom stack, is situated between the cylindrical rod and the support, and the optical pumping structure further comprises, for each other stack, a thermal conduction block forming a support for respective said stack, said thermal conduction block being mounted on the cooled support and not being in direct contact with one another, and said thermal block not being in direct contact with the two rings, the optical pumping structure further comprising: a shim made of a thermally conductive material situated under a bottom stack to adapt a thermal resistance between the bottom stack and a support of the bottom stack, wherein the shim includes at least one hole.