1.5 cm long single mode fiber laser made by femtosecond exposure of heavily doped erbium-ytterbium fiber

Dan Grobnic; Stephen J. Mihailov; Christopher William Smelser; Robert B. Walker

doi:10.1117/12.779073

26 October 2007 1.5 cm long single mode fiber laser made by femtosecond exposure of heavily doped erbium-ytterbium fiber

Dan Grobnic, Stephen J. Mihailov, Christopher William Smelser, Robert B. Walker

Author Affiliations +

Proceedings Volume 6796, Photonics North 2007; 679614 (2007) https://doi.org/10.1117/12.779073
Event: Photonics North 2007, 2007, Ottawa, Canada

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.

Citation Download Citation

Dan Grobnic, Stephen J. Mihailov, Christopher William Smelser, and Robert B. Walker "1.5 cm long single mode fiber laser made by femtosecond exposure of heavily doped erbium-ytterbium fiber", Proc. SPIE 6796, Photonics North 2007, 679614 (26 October 2007); https://doi.org/10.1117/12.779073

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