Spectral characterization and energy levels of Cr 3+:Sc 2(MoO 4) 3 crystal

Abstract

This paper reports the spectral properties and energy levels of Cr 3+:Sc 2(MoO 4) 3 crystal. The crystal field strength Dq, Racah parameter B and C were calculated to be 1408 cm −1, 608 cm −1 and 3054 cm −1, respectively. The absorption cross sections σ α of 4A 2→ 4T 1 and 4A 2→ 4T 2 transitions were 3.74×10 −19 cm 2 at 499 nm and 3.21×10 −19 cm 2 at 710 nm, respectively. The emission cross section σ e was 375×10 −20 cm 2 at 880 nm. Cr 3+:Sc 2(MoO 4) 3 crystal has a broad emission band with a broad FWHM of 176 nm (2179 cm −1). Therefore, Cr 3+:Sc 2(MoO 4) 3 crystal may be regarded as a potential tunable laser gain medium.