Toward power scaling in an acetylene mid-infrared hollow-core optical fiber gas laser: effects of pressure, fiber length, and pump power

H. W. Kushan Weerasinghe; Neda Dadashzadeh; Manasadevi P. Thirugnanasambandam; Benoît Debord; Matthieu Chafer; Frédéric Gérôme; Fetah Benabid; Kristan L. Corwin; Brian R. Washburn

doi:10.1117/12.2288430

26 February 2018 Toward power scaling in an acetylene mid-infrared hollow-core optical fiber gas laser: effects of pressure, fiber length, and pump power

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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Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 105121O (2018) https://doi.org/10.1117/12.2288430
Event: SPIE LASE, 2018, San Francisco, California, United States

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.

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H. W. Kushan Weerasinghe, Neda Dadashzadeh, Manasadevi P. Thirugnanasambandam, Benoît Debord, Matthieu Chafer, Frédéric Gérôme, Fetah Benabid, Kristan L. Corwin, and Brian R. Washburn "Toward power scaling in an acetylene mid-infrared hollow-core optical fiber gas laser: effects of pressure, fiber length, and pump power", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121O (26 February 2018); https://doi.org/10.1117/12.2288430

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