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Proceedings Paper

Temperature dependences of fluorescence characteristic for Nd/Cr:YAG materials
Author(s): Yoshiyuki Honda; Minoru Yoshida; Shinji Motokoshi; Kana Fujioka; Takahisa Jitsuno; Masahiro Nakatsuka
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Paper Abstract

Cr3+ co-doped Nd:YAG is very useful for the flashlamp or solar pumped laser through Cr3+ ion has broad absorption bands in the visible region and an efficient energy transfer caused from Cr3+ to Nd3+. But the process of the energy transfer is not understood well. It is also a problem that the absorption at near infrared is appeared with changes of Cr3+ to Cr4+. We investigated these problems by measuring the temperature dependence of fluorescence characteristics (lifetime, excitation fluorescence and absorption) and the change after UV irradiation. The excitation fluorescence spectra at 450 K increased because the Cr3+ absorption depended on temperature. The fluorescence lifetime excited at the Cr3+ absorption bands shortened with increase temperature, that is, the energy transfer time will be short. Solarization was appeared in Nd/Cr:YAG ceramics irradiated by KrF excimer laser pulses at 248 nm.

Paper Details

Date Published: 22 November 2011
PDF: 5 pages
Proc. SPIE 8190, Laser-Induced Damage in Optical Materials: 2011, 819014 (22 November 2011); doi: 10.1117/12.899047
Show Author Affiliations
Yoshiyuki Honda, Kinki Univ. (Japan)
Minoru Yoshida, Kinki Univ. (Japan)
Shinji Motokoshi, Institute of Laser Technology (Japan)
Kana Fujioka, Osaka Univ. (Japan)
Takahisa Jitsuno, Osaka Univ. (Japan)
Masahiro Nakatsuka, Institute of Laser Technology (Japan)

Published in SPIE Proceedings Vol. 8190:
Laser-Induced Damage in Optical Materials: 2011
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; M. J. Soileau, Editor(s)

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