High-efficiency 100-W Kerr-lens mode-locked Yb:YAG thin-disk oscillator

Hongshan Chen, Lisong Yan, Heyan Liu, Jingjie Hao, Tingting Yang, Hongyu Liu, Jin Zhang, Quanming Li, Hailin Wang, Guangzhi Zhu, Xiao Zhu, Hongwen Xuan*, Qing Wang, Jinwei Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We demonstrate a Kerr-lens mode-locked femtosecond Yb:YAG thin-disk oscillator and investigate the approach to increase the optical-to-optical efficiency based on the scheme of direct multiple passes of the laser beam through the thin-disk medium. With twelve passes through the thin disk, 266-fs pulses were delivered from the oscillator with an average power of 105.6 W at a repetition rate of 20 MHz. The corresponding optical-to-optical efficiency is 31.1%, which is, to the best of our knowledge, the highest efficiency of any mode-locked thin-disk oscillator with pulse duration below 300 fs. This demonstration paves the way to even more efficient mode-locked femtosecond thin-disk oscillators, and provides an excellent laser source for the applications such as non-linear frequency conversion and high-precision industrial processing.

Original languageEnglish
Article number1191010
JournalFrontiers in Physics
Volume11
DOIs
Publication statusPublished - 2023

Keywords

  • high efficiency
  • high power
  • multi-pass
  • thin disk
  • ultrashort pulses

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