Laser technology is considered to be one of the essential tools for human survival and development in the intelligent society.Such as sweeping robot, vehicle-mounted laser radar and so on.At present, major countries in science and technology attach great importance to the research and application of laser technology, China also attaches great importance to the research and application of laser technology, such as high efficiency and precision laser additive manufacturing - ecM overall manufacturing technology, femtosecond laser precision manufacturing application basic research projects in the national Key RESEARCH and development program.