Abstract

A single-frequency two-stage amplifier delivering up to 44 mJ at 2.1 μm is demonstrated. The first-stage amplifier is double-end-pumped by a 1.9 μm Tm:YLF laser, and is seeded with a 15 mJ single-frequency Ho:YAG laser operating at 200 Hz. The second-stage amplifier is end-pumped by another 1.9 μm Tm:YLF laser. The output pulse width from the second-stage amplifier is 113 ns, with a beam quality of $M^2\sim 1.32$.

© 2017 Optical Society of America

High-energy, stable single-frequency Ho:YAG ceramic amplifier system

Yixuan Zhang, Chunqing Gao, Qing Wang, QuanXin Na, Mingwei Gao, Meng Zhang, Qing Ye, YuJia Wang, and Jian Zhang
Appl. Opt. 56(34) 9531-9535 (2017)

1  kHz single-frequency 2.09  μm Ho:YAG ring laser

Quanxin Na, Chunqing Gao, Qing Wang, Yixuan Zhang, Mingwei Gao, Meng Zhang, and Yujia Wang
Appl. Opt. 56(25) 7075-7078 (2017)

Single-frequency, injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 1.91μm fiber-coupled LD

Yixuan Zhang, Chunqing Gao, Qing Wang, Quanxin Na, Meng Zhang, Qing Ye, Mingwei Gao, and Jian Zhang
Opt. Express 24(24) 27805-27811 (2016)

High-repetition-rate single-frequency Ho:YAG MOPA system

Yixuan Zhang, Chunqing Gao, Qing Wang, QuanXin Na, Mingwei Gao, Meng Zhang, and Shuai Huang
Appl. Opt. 57(15) 4222-4227 (2018)

34 mJ Ho:YAG ceramic master oscillator and power amplifier laser at 2097 nm

Yan Li, Yixuan Zhang, Quanxin Na, Chunqing Gao, Mingwei Gao, Qing Wang, and Jian Zhang
Appl. Opt. 55(11) 2853-2857 (2016)