Optimization of CO <sub>2</sub> -Based Hollow-Core Fiber Gas Laser for Watt-Level Power Output at 4.3 μm Wavelength
We numerically and experimentally study the continuous-wave mid-infrared CO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> gas fiber laser filled in anti-resonant hollow-core fiber laser. The operation of CO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> gas fiber laser is simulated based on four-level rate equations including inter-molecular collision induced relaxation, showing excellent agreement with experimental results. Under optimized operating conditions, watt-level continuous-wave laser emission is achieved, with a maximum output power of 1.81 W and a slope efficiency of 18.01%, the highest reported so far for the watt-level output.
Authors
- Binbin Lu (ORCID: https://orcid.org/0000-0002-6052-2885)
- Fei Yu (ORCID: https://orcid.org/0000-0002-1831-859X)
- Dakun Wu
- Hongwen Li
- Xinyue Zhu
Institutions
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Optics and Fine Mechanics (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- IEEE photonics journal
- Published
- 2026-02-23
- DOI
- https://doi.org/10.1109/jphot.2026.3666944
- Primary Topic
- Photonic Crystal and Fiber Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.00