Growth and spectral characteristics of Yb 3+-doped LiLa(MoO 4) 2 crystal

Abstract

A Yb 3+-doped LiLa(MoO 4) 2 crystal with dimension of ∅20×35 mm 3 has been grown by the Czochralski method. The polarized optical absorption and emission spectra of the crystal have been investigated. The Yb 3+:LiLa(MoO 4) 2 crystal has a broad absorption FWHM of 29 nm at 977 nm. The absorption cross-sections of the crystals are 1.93×10 −20 cm 2 and 1.56×10 −20 cm 2 at 977 nm for π- and σ-polarization, respectively. The emission cross-sections of the crystals are 1.53×10 −20 and 1.00×10 −20 cm 2 at 1011 nm for π- and σ-polarization, respectively. The radiative lifetime and fluorescence lifetime of the Yb 3+:LiLa(MoO 4) 2 crystal are 391 and 636 μs, respectively. The laser performance parameters β min, I past, and I min of the crystal have been calculated. The investigated results shown the Yb 3+:LiLa(MoO 4) 2 crystal is expected as a potential solid-state laser crystal materials.