Growth, mechanical, thermal and spectral properties of Cr 3+:MgMoO 4 crystal

Abstract

This paper reports the growth, mechanical, thermal and spectral properties of Cr 3+:MgMoO 4 crystals. The Cr 3+:MgMoO 4 crystals with dimensions up to 30 mm×18 mm×14 mm were obtained by TSSG method. The absorption cross-sections of 4A 2→ 4T 1 and 4A 2→ 4T 2 transitions are 12.94×10 -20 cm 2 at 493 nm and 7.89×10 -20 cm 2 at 705 nm for E//N g, respectively. The Cr 3+:MgMoO 4 crystal shows broad band emission extending from 750 nm to 1300 nm with peak at about 705 nm. The emission cross-section with FWHM of 188 nm is 119.88×10 -20 cm 2 at 963 nm for E//N g. The investigated results showed that the Cr 3+:MgMoO 4 crystal may be regarded as a potential tunable laser gain medium. © 2012 Li et al.