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Proceedings Paper

Preparation and characterization of highly thulium- and alumina-doped optical fibers for single-frequency fiber lasers
Author(s): Pavel Honzatko; Anirban Dhar; Ivan Kasik; Ondrej Podrazky; Vlastimil Matejec; Pavel Peterka; Wilfried Blanc; Bernard Dussardier
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Paper Abstract

Thulium-doped fibers suitable for core-pumped single-frequency lasers were fabricated by the modified chemical vapor deposition (MCVD) method. Refractive index profile, doping profile and spectral absorption was measured. High doping concentration of thulium ions should be achieved to allow for high absorption of light at a pump wavelength while the thulium ions clustering should be avoided to prevent the cooperative upconversion and quenching processes. The fabricated fibers featured pump absorption up to 70dB/m at a pump wavelength of 1611nm. The single-frequency master oscillator with a resonator composed of a pair of fiber Bragg gratings and a thulium-doped fiber was demonstrated with predominantly single ended operation. We achieved a slope efficiency of 22\% and a threshold of 22mW at a lasing wavelength of 1944nm.

Paper Details

Date Published: 11 October 2011
PDF: 6 pages
Proc. SPIE 8306, Photonics, Devices, and Systems V, 830608 (11 October 2011); doi: 10.1117/12.912536
Show Author Affiliations
Pavel Honzatko, Institute of Photonics and Electronics (Czech Republic)
Anirban Dhar, Institute of Photonics and Electronics (Czech Republic)
Ivan Kasik, Institute of Photonics and Electronics (Czech Republic)
Ondrej Podrazky, Institute of Photonics and Electronics (Czech Republic)
Vlastimil Matejec, Institute of Photonics and Electronics (Czech Republic)
Pavel Peterka, Institute of Photonics and Electronics (Czech Republic)
Wilfried Blanc, Lab. de Physique de la Matiere Condensee, CNRS, Univ. de Nice-Sophia Antipolis (France)
Bernard Dussardier, Lab. de Physique de la Matiere Condensee, CNRS, Univ. de Nice-Sophia Antipolis (France)


Published in SPIE Proceedings Vol. 8306:
Photonics, Devices, and Systems V
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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