Hollow-core fiber space coherent beam combination-based periodic-order laser system

The invention relates to a hollow-core fiber space coherent beam combination-based periodic-order laser system. In the system, a multi-optical path optical parameter chirped pulse amplification technology, a space coherent beam combination technology and a post-compression technology of a laser beam in a hollow-core fiber system are combined, and laser pulse output with large energy and wide period pulse width is finally achieved. The system utilizes the characteristics of high gain and no thermal effect of single-path optimal parameter chirped pulse amplification, the same seed light is amplified and compressed by N-path optical parameter chirped pulse, space coherent beam combination is performed on the amplified signal light, the signal light is injected to a hollow-core fiber compression system after shaping and focusing, and the laser pulse output with large energy, a few periods, short pulse width and good light beam quality is achieved. By the system, the requirement of a damagethreshold of a grating i