22 November 2011 Temperature dependences of fluorescence characteristic for Nd/Cr:YAG materials
Author Affiliations +
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoshiyuki Honda, Yoshiyuki Honda, Minoru Yoshida, Minoru Yoshida, Shinji Motokoshi, Shinji Motokoshi, Kana Fujioka, Kana Fujioka, Takahisa Jitsuno, Takahisa Jitsuno, Masahiro Nakatsuka, Masahiro Nakatsuka, } "Temperature dependences of fluorescence characteristic for Nd/Cr:YAG materials", Proc. SPIE 8190, Laser-Induced Damage in Optical Materials: 2011, 819014 (22 November 2011); doi: 10.1117/12.899047; https://doi.org/10.1117/12.899047
PROCEEDINGS
5 PAGES


SHARE
RELATED CONTENT

Energy transfer processes in Cr3+, Nd3+:YAG
Proceedings of SPIE (July 01 1998)
Color centers inside crystallic active media
Proceedings of SPIE (February 28 1995)
Permanent and transient response of Nd YAG and Cr YAG...
Proceedings of SPIE (September 02 2008)
Preparation of Cr: Al2O3 ceramics with low scattering loss
Proceedings of SPIE (November 18 2003)

Back to Top