Hundred-watt-level cryogenic near diffraction-limited composite thin-disk Ho:YLF oscillator at 2 µm
We present a cryogenic composite thin-disk oscillator based on a holmium-doped yttrium lithium fluoride (Ho:YLF) crystal that we believe is for the first time, with a hundred-watt-level near diffraction-limited laser output. Integrating the multi-pass pumping configuration and the cryogenic cooling technique, a maximum power of 128 W was achieved with an optical efficiency of 62.5% at 2 µm. The spectroscopic properties of 2 at.% Ho:YLF at 80 K was systematically investigated, including fluorescence lifetime and emission cross section. The beam quality was measured to be <i>M<sup>2</sup><sub>x</sub></i> = 1.55 and <i>M<sup>2</sup><sub>y</sub></i> = 1.46 in the orthogonal directions.
Authors
- Yongzhou Cheng (ORCID: https://orcid.org/0000-0002-1231-0204)
- Yuxi Fu (ORCID: https://orcid.org/0000-0003-2833-6764)
- Xiaoping Xie (ORCID: https://orcid.org/0000-0001-6616-1059)
- Wei Zhao (ORCID: https://orcid.org/0000-0003-1300-4433)
- Bingying Lei (ORCID: https://orcid.org/0000-0002-3843-3907)
- Hua Lin (ORCID: https://orcid.org/0000-0001-5393-0322)
- Le Wang (ORCID: https://orcid.org/0009-0000-0940-8262)
- Yao Shuai (ORCID: https://orcid.org/0000-0001-5268-5812)
- Liyi Zhang (ORCID: https://orcid.org/0000-0003-1209-5302)
- Yishan Wang (ORCID: https://orcid.org/0000-0002-0268-3453)
Publication Details
- Journal
- Optics Express
- Published
- 2025-04-22
- DOI
- https://doi.org/10.1364/oe.561226
- Citations
- 2
- Primary Topic
- Rare-earth and actinide compounds
- Type
- article
- Field-Weighted Citation Impact
- 2.52