High energy and narrow linewidth N2-filled hollow-core fiber laser at 1.4 {\mu}m

In this work, we develop a high energy laser at 1.4 {\mu}m wavelength through the 1st order vibrational Raman Stokes generation in a nitrogen (N2) 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 durat...

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Bibliographic Details
Published inarXiv.org
Main Authors Hong, Lujun, Zhang, Cuiling, Wahlen, Joseph, Antonio-Lopez, Jose Enrique, Rodrigo Amezcua Correa, Markos, Christos, Wang, Yazhou
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.12.2023
Subjects
Doped fibers
Fiber lasers
Pulse duration
Quantum efficiency
Raman lasers
Semiconductor lasers
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Summary:In this work, we develop a high energy laser at 1.4 {\mu}m wavelength through the 1st order vibrational Raman Stokes generation in a nitrogen (N2) 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 {\mu}J pulse energy. The maximum Raman energy of 26.5 {\mu}J is achieved at 15 bar N2 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.
ISSN:2331-8422