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Proceedings Paper

Thermal stability of bismuth-doped high-GeO2 fiber lasers
Author(s): Sergey V. Alyshev; Alexandr V. Kharakhordin; Aleksandr M. Khegai; Konstantin E. Riumkin; Elena G. Firstova; Mikhail A. Melkumov; Vladimir F. Khopin; Alexey S. Lobanov; Aleksey N. Guryanov; Sergei V. Firstov
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Paper Abstract

In this paper, we performed numerical and experimental study of the stability of bismuth-doped high-GeO2 glass core fiber used as an active medium in lasers operating in the wavelength region 1600 - 1800 nm. Mainly, we focus on the investigation of the joint effects of temperature and pumping radiation on the spectroscopic and laser characteristics of the fibers. Temporal evolution of the degradation of bismuth-related active centers (BACs) under pumping at 1550 nm, as well as the annealing of the fibers at temperature ranging from 300 to 550 °C was experimentally revealed and studied. A model describing the photochemical processes of the transformation of the BACs at different ambient conditions was proposed and used to make a long-term prediction of the dynamics of the process. The ability to simulate the long-term behavior of the medium might be instrumental since direct measurements are time consuming and therefore impractical. In addition, we performed numerical simulation to find out how the effect of photoinduced degradation of BACs affects the performance of a laser based on this type of fibers.

Paper Details

Date Published: 1 April 2020
PDF: 10 pages
Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113570P (1 April 2020); doi: 10.1117/12.2555406
Show Author Affiliations
Sergey V. Alyshev, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Alexandr V. Kharakhordin, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Aleksandr M. Khegai, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Konstantin E. Riumkin, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Elena G. Firstova, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Mikhail A. Melkumov, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Vladimir F. Khopin, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)
Alexey S. Lobanov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Aleksey N. Guryanov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Sergei V. Firstov, Fiber Optics Research Ctr. (Russian Federation)
A.M. Prokhorov General Physics Institute (Russian Federation)


Published in SPIE Proceedings Vol. 11357:
Fiber Lasers and Glass Photonics: Materials through Applications II
Maurizio Ferrari; Jacob I. Mackenzie; Stefano Taccheo, Editor(s)

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