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Proceedings Paper

Highly efficient Yb-free Er-La-Al doped ultra-low Na large mode area single-trench fiber laser
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Paper Abstract

We demonstrate a 60μm core diameter single-trench Yb free Er-La-Al doped fiber having 0.038 ultra-low-NA, using conventional MCVD process in conjunction with solution doping process. Numerical simulations ensure an effective single mode, the effective area varies from 1,820μm2 to 1,960μm2 for different thicknesses of trenches and resonant rings. This fiber has been fabricated with conventional fabrication process, which can dramatically reduce the fabrication cost, hence suitable for mass production. Moreover, all solid structure ensures easy cleaving and splicing. Experimental measurements demonstrate a robust effective single mode operation. Furthermore, this fiber in 4%-4% laser cavity shows a record efficiency of 46% with respect to absorbed power.

Paper Details

Date Published: 11 March 2016
PDF: 6 pages
Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 97280W (11 March 2016); doi: 10.1117/12.2211336
Show Author Affiliations
Deepak Jain, Univ. of Southampton (United Kingdom)
Shaiful Alam, Univ. of Southampton (United Kingdom)
Yongmin Jung, Univ. of Southampton (United Kingdom)
Pranabesh Barua, Univ. of Southampton (United Kingdom)
Martin N. Velazquez, Univ. of Southampton (United Kingdom)
Jayanta K. Sahu, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 9728:
Fiber Lasers XIII: Technology, Systems, and Applications
John Ballato, Editor(s)

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