2026-07-17 合肥物質科学研究院（HFIPS）
Summary diagram of 2.7 µm high-energy mid-infrared Er,Pr:GYAP laser (Image by QUAN Cong)
＜関連情報＞
- https://english.hf.cas.cn/nr/rn/202607/t20260717_1178560.html
- https://opg.optica.org/oe/fulltext.cfm?uri=oe-34-13-24602
LDサイドポンピングを備えた高エネルギー中赤外Er,Pr:GYAPレーザー High-energy mid-infrared Er,Pr:GYAP laser with LD side pumping
Cong Quan, Guo Chen, Dunlu Sun, Keqiang Wang, Huili Zhang, Maojie Cheng, Kunpeng Dong, Zhentao Wang, Hongyuan Li, Shiji Dou, and Zihao Tang
Optics Express Published: June 24, 2026
DOI:https://doi.org/10.1364/OE.601286
Abstract
A high-energy LD side-pumped Er,Pr:GYAP laser is demonstrated in free-running and electro-optically Q-switched operations. In free-running mode, bonded and unbonded crystal rods deliver maximum output energies of 1.21 and 0.94 J with slope efficiencies of 9.54% and 7.44%, respectively, at a working frequency of 30 Hz and a pump pulse width of 1 ms. For the bonded crystal, a maximum pulse energy of 125 mJ and a pulse width of 33.55 ns were achieved in Q-switched operation at a repetition rate of 10 Hz. Increasing the pump pulse width reduces the conversion efficiency from free-running to Q-switched operation, revealing that amplified spontaneous emission (ASE) causes substantial energy loss during energy storage. These results demonstrate that the Er,Pr:GYAP is a promising gain medium for high-energy mid-infrared lasers.
