Laser frequency doubling switching device and laser multiple frequency switching method thereof

The invention relates to a laser frequency doubling switching device and a laser multiple frequency switching method, the laser frequency doubling switching device comprises a 1064nm laser, reflectorsfor light path transmission, frequency doublers for frequency doubling switching, electric 45-degree reflectors for light path switching, and polarization coupling devices for light path coupling. Bycontrolling the movement of the electric 45-degree reflectors, two routes of 1064nm lasers can be respectively outputted or merged into one beam to be outputted, frequency doubling can also be carried out to obtain 532nm laser, 532nm laser can be likewise respectively outputted in two routes or can be merged into one beam to be outputted, and thereby the requirements of different laser beam processing processes can be met, the laser frequency doubling switching device has the characteristics of simple structure, easiness in manufacturing and assembly, convenience in maintenance and the like. 本发明涉及激光倍频切换装置及方法，包含1064nm激