Gain grating reciprocity formula self-adaptation laser instrument based on body bragg grating

The utility model provides a gain grating reciprocity formula self-adaptation laser instrument based on body bragg grating belongs to the laser instrument field. Utilize and interfere the gain grating that produces to carry out the dynamic control of laser beam time spatial character to select intracavity vibration optic angle degree and live width through body bragg grating, and belong to the laser field by the pumping source, pumping coupled system, laser gain medium -, the cylindrical mirror, the mirror -I that is all-trans, the mirror group -II that is all-trans, body bragg grating is constituteed. The utility model has the advantages of it is following: is compact and simple in structure. The frequency spectrum selectivity characteristic of system, controlling-pattern volume have been improved, can obtain high optical quality laser output.