Abstract

High optical quality Nd-doped Sc2SiO5 crystal with size of diameter 27mm×60mm was obtained by Czochralski method. An x-ray diffraction pattern of Nd:SSO crystal confirmed that the as-grown crystal was isostructual with the SSO crystal. Absorption and emission spectra were recorded at 10K. The Judd–Ofelt theory was applied to obtain standard parameters Ωt(t=2,4,6) and the fitting result of experimental absorption line strengths, which provided the F324 radiative lifetime (τrad) of 219μs and the luminescence branching ratio β of 0.57 for the F324I924 laser transition. The stimulated emission cross section of 1.04×1019cm2 at 1074nm was calculated using the Füchtbauer–Ladenburg equation. The F324 luminescence lifetimes with 215μs at 10K and 198μs at 300K were determined from luminescence decay curves, indicating high quantum efficiency in the Nd:SSO crystal. All these results showed that Nd:SSO would be a promising gain media in solid-state lasers.

© 2009 Optical Society of America

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