Thermal quenching of the fluorescence quantum efficiency in colquiriite crystals measured by thermal lens spectrometry

    Authors

    V. Pilla; T. Catunda; S. M. Lima; A. N. Medina; M. L. Baesso; H. P. Jenssen;A. Cassanho

    Comments

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    Abbreviated Journal Title

    J. Opt. Soc. Am. B-Opt. Phys.

    Keywords

    CR-LISAF LASER; THERMOOPTICAL PROPERTIES; TEMPERATURE-DEPENDENCE; OPTICAL-GLASSES; UP-CONVERSION; ND-YAG; OPERATION; SPECTRA; SOLIDS; HEAT; Optics

    Abstract

    The dual-beam mode-mismatched thermal lens technique was used to study the temperature dependence of the absolute fluorescence quantum efficiency (eta) of a thermal-quenching fluorescence (TQF) process in Cr3+-doped colquiriite crystals (LiSAF and LiSGaF), from 300 to 450 K. The research was developed at a low excitation-power level in order to eliminate the energy-transfer upconversion effect. The results showed that TQF is the main loss mechanism involved, The thermal diffusivity, the thermal conductivity, and the specific heat of the samples were also measured in the same temperature range. (C) 2004 Optical Society of America.

    Journal Title

    Journal of the Optical Society of America B-Optical Physics

    Volume

    21

    Issue/Number

    10

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    1784

    Last Page

    1791

    WOS Identifier

    WOS:000224306500009

    ISSN

    0740-3224

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