Stability of high-power laser mirrors against the thermal action of the coolant

摘要

This paper presents the results of an analysis of the mechanism by which distortions are produced in laser mirrors by the thermal action of a coolant with a time-variable temperature. Methods are determined for reducing such distortions. A description is given of the thermally invariant design of a laser mirror that possesses enhanced stability against the thermal action of the coolant. A technique is described for comparative tests of mirrors with the thermally invariant design and the basic design, and the results are presented.