Crystal growth, polarized spectra, and laser performance of Yb:CaGdAlO4 crystal. (8th March 2016)

• Record Type: Journal Article
• Authors: Di, J Q; Xu, X D; Xia, C T; Zheng, L H; Aka, G; Yu, H H; Sai, Q L; Guo, X Y; Zhu, L
• Is Part Of: Laser physics. Volume 26:Number 4(2016:Apr.)
• Publication Date: 2016-03-08
• Subjects: Yb:CaGdAlO4 -- crystal growth -- spectral properties -- laser; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1054-660X/26/4/045803
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: In this paper, the crystal growth, polarized spectra, and laser performance of Yb:CaGdAlO4 crystal were reported. The segregation coefficient of Yb 3+ ions was calculated to be 0.47. The cell parameters were determined to be a = b = 0.3658 nm, c = 1.1985 nm. The peak absorption cross-section was calculated to be 2.65 × 10 −20 cm 2 at 979 nm and the peak stimulated emission cross-section was 2.23 × 10 −20 cm 2 at 980 nm for the π polarization. The continuous-wave (CW) laser operations of uncoated Yb:CaGdAlO4 crystals with 5 × 5 × 3 mm 3 in size were demonstrated. A maximum output power of 1.6 W at 1048 nm was obtained with a slope efficiency of 28%. The results show that Yb:CaGdAlO4 crystal is a promising laser medium.