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  • Chinese Optics Letters
  • Vol. 17,
  • Issue 4,
  • pp. 041404-
  • (2019)

Hybrid femtosecond laser system based on a Yb:KGW regenerative amplifier for NP polarization

Dongyu Yan, Bowen Liu, Yuxi Chu, Huanyu Song, Lu Chai, Minglie Hu, and Chingyue Wang

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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 μJ pulse energy at a 60 kHz repetition rate.

© 2019 Chinese Laser Press

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