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Title: Charge-transfer state excitation as the main mechanism of the photodarkening process in ytterbium-doped aluminosilicate fibres

Abstract

We have studied photodarkening in ytterbium-doped fibre preforms with an aluminosilicate glass core. Analysis of their absorption and luminescence spectra indicates the formation of stable Yb{sup 2+} ions in the glass network under IR laser pumping at a wavelength λ = 915 nm and under UV irradiation with an excimer laser (λ = 193 nm). We have performed comparative studies of the luminescence spectra of the preforms and crystals under excitation at a wavelength of 193 nm. The mechanism behind the formation of Yb{sup 2+} ions and aluminium – oxygen hole centres (Al-OHCs), common to ytterbium-doped YAG crystals and aluminosilicate glass, has been identified: photoinduced Yb{sup 3+} charge-transfer state excitation. (optical fibres)

Authors:
; ; ; ; ;  [1]; ; ;  [2];  [3]
  1. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)
  2. G.G.Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)
  3. Open Joint-Stock Company M.F. Stel'makh Polyus Research Institute, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22373322
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 12; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; ALUMINIUM; ALUMINIUM SILICATES; CRYSTALS; DOPED MATERIALS; EXCIMER LASERS; EXCITATION; FAR INFRARED RADIATION; GLASS; LUMINESCENCE; OPTICAL FIBERS; OXYGEN; PUMPING; SPECTRA; YTTERBIUM; YTTERBIUM IONS

Citation Formats

Bobkov, K K, Rybaltovsky, A A, Vel'miskin, V V, Likhachev, M E, Bubnov, M M, Dianov, E M, Umnikov, A A, Gur'yanov, A N, Vechkanov, N N, and Shestakova, I A. Charge-transfer state excitation as the main mechanism of the photodarkening process in ytterbium-doped aluminosilicate fibres. United States: N. p., 2014. Web. doi:10.1070/QE2014V044N12ABEH015622.
Bobkov, K K, Rybaltovsky, A A, Vel'miskin, V V, Likhachev, M E, Bubnov, M M, Dianov, E M, Umnikov, A A, Gur'yanov, A N, Vechkanov, N N, & Shestakova, I A. Charge-transfer state excitation as the main mechanism of the photodarkening process in ytterbium-doped aluminosilicate fibres. United States. doi:10.1070/QE2014V044N12ABEH015622.
Bobkov, K K, Rybaltovsky, A A, Vel'miskin, V V, Likhachev, M E, Bubnov, M M, Dianov, E M, Umnikov, A A, Gur'yanov, A N, Vechkanov, N N, and Shestakova, I A. Wed . "Charge-transfer state excitation as the main mechanism of the photodarkening process in ytterbium-doped aluminosilicate fibres". United States. doi:10.1070/QE2014V044N12ABEH015622.
@article{osti_22373322,
title = {Charge-transfer state excitation as the main mechanism of the photodarkening process in ytterbium-doped aluminosilicate fibres},
author = {Bobkov, K K and Rybaltovsky, A A and Vel'miskin, V V and Likhachev, M E and Bubnov, M M and Dianov, E M and Umnikov, A A and Gur'yanov, A N and Vechkanov, N N and Shestakova, I A},
abstractNote = {We have studied photodarkening in ytterbium-doped fibre preforms with an aluminosilicate glass core. Analysis of their absorption and luminescence spectra indicates the formation of stable Yb{sup 2+} ions in the glass network under IR laser pumping at a wavelength λ = 915 nm and under UV irradiation with an excimer laser (λ = 193 nm). We have performed comparative studies of the luminescence spectra of the preforms and crystals under excitation at a wavelength of 193 nm. The mechanism behind the formation of Yb{sup 2+} ions and aluminium – oxygen hole centres (Al-OHCs), common to ytterbium-doped YAG crystals and aluminosilicate glass, has been identified: photoinduced Yb{sup 3+} charge-transfer state excitation. (optical fibres)},
doi = {10.1070/QE2014V044N12ABEH015622},
journal = {Quantum Electronics (Woodbury, N.Y.)},
number = 12,
volume = 44,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 2014},
month = {Wed Dec 31 00:00:00 EST 2014}
}