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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 21, Iss. 10 — Oct. 1, 2004
  • pp: 1784–1791

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

Viviane Pilla, Tomaz Catunda, Sandro Marcio Lima, Antonio Neto Medina, Mauro Luciano Baesso, Hans P. Jenssen, and Arlete Cassanho  »View Author Affiliations

JOSA B, Vol. 21, Issue 10, pp. 1784-1791 (2004)

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The dual-beam mode-mismatched thermal lens technique was used to study the temperature dependence of the absolute fluorescence quantum efficiency (η) 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.

© 2004 Optical Society of America

OCIS Codes
(140.6810) Lasers and laser optics : Thermal effects
(160.3380) Materials : Laser materials
(350.5340) Other areas of optics : Photothermal effects
(350.6830) Other areas of optics : Thermal lensing

Viviane Pilla, Tomaz Catunda, Sandro Marcio Lima, Antonio Neto Medina, Mauro Luciano Baesso, Hans P. Jenssen, and Arlete Cassanho, "Thermal quenching of the fluorescence quantum efficiency in colquiriite crystals measured by thermal lens spectrometry," J. Opt. Soc. Am. B 21, 1784-1791 (2004)

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