COMPENSATOR FOR THERMALLY INDUCED DEPOLARISATION IN ABSORBING OPTICAL LASER ELEMENT Russian patent published in 2014 - IPC H01S3/10 G02F1/01 

FIELD: physics.

SUBSTANCE: compensator for thermally induced depolarisation γ₀ includes a compensating optical element located on an optical axis and mounted on an absorbing optical element. The compensating optical element is made of material whose parameters satisfy at least one of the following conditions: the optical anisotropy parameter of the material is negative (ξ₁<0), or the thermo-optical characteristic Q₁ of the material has a sign opposite to that of the thermo-optical characteristic Q₀ of the material of the absorbing optical element, wherein the length L₁ of the compensating optical element and the position of the crystallographic axes thereof is defined by the choice of the material of the compensating optical element and the minimum condition of overall thermally induced depolarisation in the absorbing optical element - compensating optical element system.

EFFECT: enabling compensation of thermally induced depolarisation in an absorbing optical laser element using only one optical element, which simplifies manufacturing and adjustment of the designed compensator.

7 cl, 3 dwg