Photodarkening and photobleaching of an ytterbium-doped silica double-clad LMA fiber | Zendy

Inka Manek-Hönninger | Zendy; Johan Boullet | Zendy; Thierry Cardinal | Zendy; F. Guillen | Zendy; S. Ermeneux | Zendy; Maciej Podgórski | Zendy; Ramatou Bello Doua | Zendy; F. Salin | Zendy

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Photodarkening and photobleaching of an ytterbium-doped silica double-clad LMA fiber

Author(s) -

Inka Manek-Hönninger,

Johan Boullet,

Thierry Cardinal,

F. Guillen,

S. Ermeneux,

Maciej Podgórski,

Ramatou Bello Doua,

F. Salin

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.001606

Subject(s) - photodarkening , materials science , photobleaching , optics , lasing threshold , fiber , fiber laser , silica fiber , ytterbium , optoelectronics , optical fiber , absorption (acoustics) , doping , fluorescence , wavelength , physics , composite material

We studied the temporal evolution of the photodarkening effect in an Yb-doped silica LMA fiber. The absorption spectra exhibit an increase in absorption in the visible and in the near infrared spectral range when the fiber is exposed to pump light around 980 nm. We show the influence of the photodarkening on the cw lasing properties of the fiber, and demonstrate photobleaching of the same fiber by exposure to UV light at 355 nm. The corresponding absorption spectra and lasing performances are shown and are entirely comparable to those of a new fiber.

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