Abstract

In this Letter, we present a high-pulse energy (${\gt}{10}\;\unicode{x00B5} {\rm J}$) Raman laser at 1946 nm wavelength directly pumped with a 1533 nm custom-made fiber laser. The Raman laser is based on stimulated Raman scattering (SRS) in an 8 m carbon dioxide (${{\rm CO}_2}$)-filled nested anti-resonant hollow-core fiber. The low-energy phonon emission combined with the inherent SRS process along the low-loss fiber allows the generation of high-pulse energy up to 15.4 µJ at atmospheric ${{\rm CO}_2}$ pressure. The Raman laser exhibits good long-term stability and low relative intensity noise of less than 4%. We also investigate the pressure-dependent overlap of the Raman laser line with the absorption band of ${{\rm CO}_2}$ at the 2 µm spectral range. Our results constitute a novel, to the best of our knowledge, and promising technology towards high-energy 2 µm lasers.

© 2021 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)

High pulse energy and quantum efficiency mid-infrared gas Raman fiber laser targeting CO₂ absorption at 4.2 µm

Yazhou Wang, Manoj K. Dasa, Abubakar I. Adamu, J. E. Antonio-Lopez, Md. Selim Habib, Rodrigo Amezcua-Correa, Ole Bang, and Christos Markos
Opt. Lett. 45(7) 1938-1941 (2020)

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)

Room-temperature watt-level and tunable ∼3 µm lasers in Ho³⁺/Pr³⁺ co-doped AlF₃-based glass fiber

Mo Liu, Jiquan Zhang, Niannian Xu, Xinwei Tian, Shijie Jia, Shunbin Wang, Gilberto Brambilla, and Pengfei Wang
Opt. Lett. 46(10) 2417-2420 (2021)

Pulsed fiber laser oscillator at 1.7 µm by stimulated Raman scattering in H₂-filled hollow-core photonic crystal fibers

Wenxi Pei, Hao Li, Wei Huang, Meng Wang, and Zefeng Wang
Opt. Express 29(21) 33915-33925 (2021)