Crystal growth and photoluminescence spectra properties of (YbxNdySc1−x−y)2SiO5 laser crystal. (6th June 2018)

• Record Type: Journal Article
• Authors: Zou, Zhengting; Zheng, Lihe; Wang, Juntao; Jiang, Dapeng; Liu, Shande; Sai, Qinglin; Wang, Jingya; Hu, Hao; Su, Liangbi
• Is Part Of: Laser physics letters. Volume 15:Number 8(2018:Aug.)
• Publication Date: 2018-06-06
• Subjects: ytterbium -- laser crystal -- rare-earth-doped materials -- spectra properties; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aabfff
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A (Yb0.05 Nd0.003 Sc0.947 )2 SiO5 (Yb 3+, Nd 3+ :Sc2 SiO5 ) single crystal grown by the Czochralski technique is designed to enhance the gain cross-section through the energy transfer between energy level 4 F3/2 of Nd 3+ ions and energy level 2 F5/2 of Yb 3+ ions. The cell parameters were calculated as a = 9.94 Å, b = 6.29 Å, c = 11.67 Å, V = 710.67 Å 3 and β = 103.19 °. The absorption cross-section σ abs in Yb 3+, Nd 3+ :Sc2 SiO5 was 1.18 × 10 −20 cm 2 at 980 nm, which was an increase of 28.3% when compared with that in a Yb 3+ :Sc2 SiO5 crystal. The emission cross-section σ em in Yb 3+, Nd 3+ :Sc2 SiO5 was 0.63 × 10 −20 cm 2 at 1063 nm, an enhancement of 18.9% when compared with that in Yb 3+ :Sc2 SiO5 . The minimum pump intensity parameter I min at 1063 nm was 0.39 kW·cm −2, which is a 74.5% reduction compared with 1.53 kW·cm −2 in the case of YAG. A direct continuous wave diode-pumped Yb 3+, Nd 3+ :Sc2 SiO5 laser could generate an output power of 6.14 W at 1057.88 nm with a slope efficiency of 56.7% by using an output coupler with transmission T = 10%.