The main research field is ultra-high and ultra-fast lasers. In terms of ultra-high laser, the "hybrid CPA-OPCPA" technology scheme was proposed and experimentally verified, achieving the highest peak power amplification based on OPCPA terminal at that time. In terms of ultra-fast laser, the "Advanced DC-OPA" scheme was proposed and experimentally verified, breaking the technical bottleneck of developing high pulse energy, single-cycle (even shorter) pulse duration infrared laser system. The highest peak power, single-cycle, CEP-stable infrared laser was achieved.