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Proceedings Paper

1.5 cm long single mode fiber laser made by femtosecond exposure of heavily doped erbium-ytterbium fiber
Author(s): Dan Grobnic; Stephen J. Mihailov; Christopher William Smelser; Robert B. Walker
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Paper Abstract

The fabrication of a very short fiber laser made in heavily doped (0.23 wt% Er3+, 2.5 wt% Yb3+) Erbium-Ytterbium silica fiber is presented. The laser cavity is built by inscribing two identical Bragg gratings 8 mm apart as cavity mirrors using ultrafast femtosecond radiation from an infrared regenerative amplifier and the phase mask method. The fiber Bragg gratings have a 6.4 mm Gaussian distribution of the refractive index modulation and a 99.9% reflectivity. The evaluation of the broadband loss induced during the ultrafast laser exposure resulted in < 0.1 dB at the resonant wavelength. The fiber laser efficiency and the influence of thermal effects of the pump dissipation on the grating Brass resonance is also presented. Major advantages of ultrafast IR laser inscription of Bragg gratings for fiber lasers cavities will also be discussed.

Paper Details

Date Published: 26 October 2007
PDF: 6 pages
Proc. SPIE 6796, Photonics North 2007, 679614 (26 October 2007); doi: 10.1117/12.779073
Show Author Affiliations
Dan Grobnic, Communications Research Ctr. Canada (Canada)
Stephen J. Mihailov, Communications Research Ctr. Canada (Canada)
Christopher William Smelser, Communications Research Ctr. Canada (Canada)
Robert B. Walker, Communications Research Ctr. Canada (Canada)

Published in SPIE Proceedings Vol. 6796:
Photonics North 2007
John Armitage, Editor(s)

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