178 mJ single-frequency nanosecond Tm,Ho:YAG amplifier
A high-energy single-frequency nanosecond diode side-pumped Tm, Ho-codoped yttrium aluminum garnet (Tm,Ho:YAG) laser at 2.09 µm is demonstrated. The laser is designed as a master oscillator and power amplifier (MOPA) system and includes a 2.09 µm single-frequency seed source, an injection-amplifier with a folded "twisted-mode" cavity, and a two-stage amplifier. A maximum single-frequency output energy of 178 mJ with a pulse width of 235.4 ns and a pulse repetition rate (PRR) of 5 Hz is achieved. The linewidth of the single-frequency pulse is measured to be 2.79 MHz by a heterodyne beating technique. The <i>M</i><sup>2</sup> factors are measured to be 1.72 and 1.67 in the x and y directions, respectively.
Authors
- Fengfeng Zhang (ORCID: https://orcid.org/0000-0001-5250-9421)
- Qin-Jun Peng
- guotai li
- Da-Fu Cui
- Yu Xuan Xiang
- Tianhao Lv
- yixuan zhang
- zhimin wang
Institutions
- Chinese Academy of Sciences (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Applied Optics
- Published
- 2026-01-26
- DOI
- https://doi.org/10.1364/ao.587192
- Primary Topic
- Solid State Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00