FIELD: physics.
SUBSTANCE: method comprises steps for generating laser light in a spectral range; filtering laser light with a stabilising filter having a spectral characteristic at a spectral position; shifting the spectral position of said spectral characteristic of the stabilising filter depending on temperature; filtering laser light with an additional filter having a spectral characteristic at a spectral position to generate output laser light. The spectral position of said spectral characteristic of the additional filter is shifted while matching shift of the spectral position of the spectral characteristic of the additional filter and the spectral position of the spectral characteristic of the stabilising filter.
EFFECT: possibility of maintaining constant intensity of output laser light.
21 cl, 16 dwg
