Hybrid femtosecond laser system based on an Yb:KGW regenerative amplifier for NP-polarization
We report a hybrid femtosecond laser system based on a femtosecond Yb-doped fiber laser and an Yb:KGW regenerative amplifier. To match the central wavelength of the seed source, an Yb:KGW crystal is used in the regenerative amplifier for Np-polarization. We study and optimize the dynamics of nonlinear amplification to alleviate the gain narrowing effect. With optimization, the system can output 270-fs pulses with 21-μJ pulse energy at a 60-kHz repetition rate.
Yan Dongyu,Liu Bowen,Chu Yuxi,Song Huanyu,Chai Lu,Hu Minglie,Wang Qingyue. Hybrid femtosecond laser system based on an Yb:KGW regenerative amplifier for NP-polarization[J].Chinese Optics Letters,2019,17(4):04.