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High Energy and Narrow Linewidth N2-Filled Hollow-Core Fiber Laser at 1.4 μm
- Source :
- Journal of Lightwave Technology; August 2024, Vol. 42 Issue: 16 p5645-5649, 5p
- Publication Year :
- 2024
-
Abstract
- In this work, we develop a high energy laser at 1.4 μm wavelength through the 1st order vibrational Raman Stokes generation in a nitrogen (N<subscript>2</subscript>) filled nodeless anti-resonant hollow core fiber (ARHCF), pumped using a custom-made 1060 nm Yb-doped narrow-linewidth fiber laser with 3.7 ns pulse duration and 98 μJ pulse energy. The maximum Raman energy of 26.5 μJ is achieved at 15 bar N<subscript>2</subscript> pressure, corresponding to a quantum efficiency of 45% and peak power of 8.03 kW with 3.3 ns pulse width. This Raman laser has a narrow linewidth of 0.16 nm, and it is tunable over ∼2 nm range by thermally tuning the laser diode seed wavelength of the pump fiber laser. This work provides a promising alternative for developing high energy and narrow-linewidth lasers outside the gain spectral regions of rare earth ion doped fibers.
Details
- Language :
- English
- ISSN :
- 07338724 and 15582213
- Volume :
- 42
- Issue :
- 16
- Database :
- Supplemental Index
- Journal :
- Journal of Lightwave Technology
- Publication Type :
- Periodical
- Accession number :
- ejs67048063
- Full Text :
- https://doi.org/10.1109/JLT.2024.3394575