摘要
In this paper,we innovatively conduct a Porro prism-based beam pointing stability promotion technique research and realize a high-performance rod-type photonic crystal fiber-based chirped pulse amplification(CPA)system,mainly including a frequency-reduced all-fiber pre-amplification stage,photonic crystal rod-based main amplification stage,and 1600 lines/mm transmission grating-pair compressor.Laser output with average power of 50 W,repetition rates of500 kHz,pulse energy of 100μJ,pulse duration of 830 fs,beam quality of M2<1.3,power fluctuation of 0.55%root mean square,and beam pointing drift of 19μrad/?C over 8 h is realized.The high-performance laser system has an enormous application potential in fundamental research and precision manufacturing fields.
基金
supported by the Key-Area Research and Development Program of Guangdong Province(No.2018B090904003)
National Natural Science Foundation of China(NSFC)(Nos.61805274 and 6169022)
National Key R&D Program of China(No.2018YFB1108000)。
