Cryogenically cooled yb: KGW regenerative amplifie
We develop a diode-pumped cryogenically cooled Yb: KGd(WO4)2 (Yb: KGW) crystal regenerative amplifier (RA). At 77 K, it delivers 1.28 mJ output pulses with 2.9 nm spectral bandwidth and output power stability of 0.7% at a 1 kHz repetition rate. The amplified beam demonstrates near-diffraction-limited quality, exhibiting M² factors of 1.01 and 1.01 in the horizontal and vertical directions, respectively. To our best knowledge, this is the first cryogenically cooled Yb: KGW crystal RA.
Authors
- Z Y Li (ORCID: https://orcid.org/0009-0005-8068-8574)
- Qingyue Cui
- Qingdian Lin
- Han Kong
- yongcheng zhong
- Jinwei Gu
- Jun Yu
- Cangtao Zhou
- Zhe Zhang
- Jie Xu
- Famei Wang
- Shuangchen Ruan
- Hanlin Xu
- Yifeng Ye
- Xiaoyang Guo
Institutions
- Shenzhen Technology University (CN)
- Advanced Laser Technology (United Kingdom) (GB)
Publication Details
- Journal
- Applied Physics B
- Published
- 2026-05-23
- DOI
- https://doi.org/10.1007/s00340-026-08643-y
- Primary Topic
- Solid State Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Basic and Applied Basic Research Foundation of Guangdong Province