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Toward power scaling in an acetylene mid-infrared hollow-core optical fiber gas laser: effects of pressure, fiber length, and pump power
Author(s): H. W. Kushan Weerasinghe; Neda Dadashzadeh; Manasadevi P. Thirugnanasambandam; Benoît Debord; Matthieu Chafer; Frédéric Gérôme; Fetah Benabid; Kristan L. Corwin; Brian R. Washburn
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Paper Abstract

The effect of gas pressure, fiber length, and optical pump power on an acetylene mid-infrared hollow-core optical fiber gas laser (HOFGLAS) is experimentally determined in order to scale the laser to higher powers. The absorbed optical power and threshold power are measured for different pressures providing an optimum pressure for a given fiber length. We observe a linear dependence of both absorbed pump energy and lasing threshold for the acetylene HOFGLAS, while maintaining a good mode quality with an M-squared of 1.15. The threshold and mode behavior are encouraging for scaling to higher pressures and pump powers.

Paper Details

Date Published: 26 February 2018
PDF: 9 pages
Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121O (26 February 2018); doi: 10.1117/12.2288430
Show Author Affiliations
H. W. Kushan Weerasinghe, Kansas State Univ. (United States)
Neda Dadashzadeh, Kansas State Univ. (United States)
Manasadevi P. Thirugnanasambandam, Kansas State Univ. (United States)
Benoît Debord, XLIM Institut de Recherche, CNRS, Univ. of Limoges (France)
Matthieu Chafer, XLIM Institut de Recherche, CNRS, Univ. of Limoges (France)
Frédéric Gérôme, XLIM Institut de Recherche, CNRS, Univ. of Limoges (France)
Fetah Benabid, XLIM Institut de Recherche, CNRS, Univ. of Limoges (France)
Kristan L. Corwin, Kansas State Univ. (United States)
Brian R. Washburn, Kansas State Univ. (United States)


Published in SPIE Proceedings Vol. 10512:
Fiber Lasers XV: Technology and Systems
Ingmar Hartl; Adrian L. Carter, Editor(s)

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