Abstract

In this Letter, we demonstrate a high pulse energy and linearly polarized mid-infrared Raman fiber laser targeting the strongest absorption line of ${\rm CO}_2$ at $\sim{4.2}\;\unicode {x00B5} {\rm m}$. This laser was generated from a hydrogen (${\rm H}_2$)-filled antiresonant hollow-core fiber, pumped by a custom-made 1532.8 nm Er-doped fiber laser delivering 6.9 ns pulses and 11.6 kW peak power. A quantum efficiency as high as 74% was achieved, to yield 17.6 µJ pulse energy at 4.22 µm. Less than 20 bar ${\rm H}_2$ pressure was required to maximize the pulse energy since the transient Raman regime was efficiently suppressed by the long pump pulses.

© 2020 Optical Society of America

Multi-wavelength high-energy gas-filled fiber Raman laser spanning from 1.53 µm to 2.4 µm

Abubakar I. Adamu, Yazhou Wang, Md. Selim Habib, Manoj. K. Dasa, J. E. Antonio-Lopez, Rodrigo Amezcua-Correa, Ole Bang, and Christos Markos
Opt. Lett. 46(3) 452-455 (2021)

CO₂-based hollow-core fiber Raman laser with high-pulse energy at 1.95 µm

Yazhou Wang, Olav Thorbjørn Sandberg Schiess, Rodrigo Amezcua-Correa, and Christos Markos
Opt. Lett. 46(20) 5133-5136 (2021)

Efficient, watt-level, tunable 1.7 µm fiber Raman laser in H₂-filled hollow-core fibers

Wei Huang, Zhixian Li, Yulong Cui, Zhiyue Zhou, and Zefeng Wang
Opt. Lett. 45(2) 475-478 (2020)

Watt-level efficient 2.3 µm thulium fluoride fiber laser

Aleksey Tyazhev, Florent Starecki, Solenn Cozic, Pavel Loiko, Lauren Guillemot, Alain Braud, Franck Joulain, Mincheng Tang, Thomas Godin, Ammar Hideur, and Patrice Camy
Opt. Lett. 45(20) 5788-5791 (2020)

2.9 µm lasing from a Ho³⁺/Pr³⁺ co-doped AlF₃-based glass fiber pumped by a 1150 nm laser

Shunbin Wang, Jiquan Zhang, Niannian Xu, Shijie Jia, Gilberto Brambilla, and Pengfei Wang
Opt. Lett. 45(5) 1216-1219 (2020)