Chinese Optics Letters, 2019, 17 (4): 041404, Published Online: Apr. 15, 2019
Hybrid femtosecond laser system based on a Yb:KGW regenerative amplifier for NP polarization Download: 515次
Abstract
We report a hybrid femtosecond laser system based on a femtosecond Yb-doped fiber laser and a Yb-doped potassium gadolinium tungstate (Yb:KGW) regenerative amplifier. To match the central wavelength of the seed source, a Yb:KGW crystal is used in the regenerative amplifier for N p 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 μ J pulse energy at a 60 kHz repetition rate.
Dongyu Yan, Bowen Liu, Yuxi Chu, Huanyu Song, Lu Chai, Minglie Hu, Chingyue Wang. Hybrid femtosecond laser system based on a Yb:KGW regenerative amplifier for