Crystal structure and optical study of Tm:Sc2SiO5 single crystal

Lihe Zheng; Jun Xu; Liangbi Su; Hongjun Li; Ryba-Romanowski, Witold; Lisiecki, Radosław; Solarz, Piotr
March 2010
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p121908
Academic Journal
Sc2SiO5:4 at. %Tm crystal was obtained by the Czochralski method and the crystal cell parameters were calculated. Sixfold coordinated Sc-ions occupied two different crystallographic sites but the low temperature optical spectra only represented energy transitions originating from Tm ions residing in one site. Room temperature absorption spectrum was analyzed in the framework of Judd–Ofelt theory and the calculated absorption coefficient and cross section were 10.47 cm-1 and 5.55×10-21 cm2 at 791 nm respectively. Stimulated emission cross sections for the 3F4–3H6 transition near 1900 nm were evaluated using the reciprocity method while the luminescence 3F4 lifetime was measured to be 1.14 ms. We conclude that Tm:Sc2SiO5 is promising for diode-pumped infrared lasers.


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