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Proceedings Paper

Temperature influence on spectroscopic and lasing properties of blue laser diode pumped Alexandrite crystal
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Paper Abstract

We report on influence of temperature on spectroscopic and lasing properties of Alexandrite (Cr3+:BeAl2O4) crystal. Fluorescence lifetime, polarization-resolved absorption and emission spectra, and laser characteristics at ∼750 nm are described in detail within the 78-400K temperature range. As a pumping source, 3.5W InGaN blue laser-diode operating at 444nm wavelength was used. The best results achieved were at ∼353K crystal temperature — 326mW of continuous output power at 750nm wavelength with the slope efficiency near 20% (related to absorbed pump power). At cryogenic temperatures, the Alexandrite laser generation at the so-called R-line, i.e not in the vibronic mode, has been observed.

Paper Details

Date Published: 15 February 2018
PDF: 8 pages
Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 1051122 (15 February 2018); doi: 10.1117/12.2287787
Show Author Affiliations
Martin Fibrich, Czech Technical Univ. in Prague (Czech Republic)
Institute of Physics ASCR, v.i.i. (Czech Republic)
ELI-Beamlines (Czech Republic)
Jan Šulc, Czech Technical Univ. in Prague (Czech Republic)
David Vyhlídal, Czech Technical Univ. in Prague (Czech Republic)
Helena Jelínková, Czech Technical Univ. in Prague (Czech Republic)
Miroslav Čech, Czech Technical Univ. in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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