Non-isothermal bleaching of photodarkened Yb-doped fibers | Zendy

Martin Leich | Zendy; U. Röpke | Zendy; S. Jetschke | Zendy; Sonja Unger | Zendy; V. Reichel | Zendy; J. Kirchhof | Zendy

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Non-isothermal bleaching of photodarkened Yb-doped fibers

Author(s) -

Martin Leich,

U. Röpke,

S. Jetschke,

Sonja Unger,

V. Reichel,

J. Kirchhof

Publication year - 2009

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.012588

Subject(s) - photodarkening , materials science , optics , isothermal process , full width at half maximum , doping , absorption (acoustics) , thermal , attenuation coefficient , fiber laser , wavelength , optoelectronics , thermodynamics , physics , composite material

We report on the thermal treatment of photodarkened Yb-doped fiber samples. The method of non-isothermal bleaching at different temperature ramp rates can be used to determine the thermal energy distribution of photodarkening induced color centers. A distributed activation energy with a mean value of about 1.3 eV and a FWHM of 0.5 eV was found. Spectral changes during thermal treatment were observed and could be interpreted, e.g. as an enhancement of the absorption cross section.

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