Dy{sup 3+}-doped Ga–Sb–S chalcogenide glasses for mid-infrared lasers

• Published in: Materials research bulletin Vol. 70
• Main Authors: Zhang, Mingjie, Yang, Anping, Peng, Yuefeng, Zhang, Bin, Ren, He, Guo, Wei, Yang, Yan, Zhai, Chengcheng, Wang, Yuwei, Yang, Zhiyong, Tang, Dingyuan
• Format: Journal Article
• Language: English
• Published: United States 15.10.2015
• Subjects: ANTIMONY COMPOUNDS; CHALCOGENIDES; CROSS SECTIONS; DOPED MATERIALS; DYSPROSIUM ADDITIONS; GALLIUM COMPOUNDS; GLASS; INTERMEDIATE INFRARED RADIATION; LUMINESCENCE; MATERIALS SCIENCE; OPACITY; PHONONS; QUANTUM EFFICIENCY; RAMAN SPECTROSCOPY; STABILITY; STIMULATED EMISSION; SULFUR COMPOUNDS
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/J.MATERRESBULL.2015.04.019

Highlights: • Novel Ga–Sb–S chalcogenide glasses doped with Dy{sup 3+} ions were synthesized. • The glasses show good thermal stability and excellent infrared transparency. • The glasses show low phonon energy and intense mid-infrared emissions. • The mid-infrared emissions have high quantum efficiency. • The mid-infrared emissions have large stimulated emission cross sections. - Abstract: Novel Ga–Sb–S chalcogenide glasses doped with different amount of Dy{sup 3+} ions were prepared. Their thermal stability, optical properties, and mid-infrared (MIR) emission properties were investigated. The glasses show good thermal stability, excellent infrared transparency, very low phonon energy (∼306 cm{sup −1}), and intense emissions centered at 2.95, 3.59, 4.17 and 4.40 μm. Three Judd–Ofelt intensity parameters (Ω{sub 2} = 8.51 × 10{sup −20} cm{sup 2}, Ω{sub 4} = 2.09 × 10{sup −20} cm{sup 2}, and Ω{sub 6} = 1.60 × 10{sup −20} cm{sup 2}) are obtained, and the related radiative transition properties are evaluated. The high quantum efficiencies and large stimulated emission cross sections of the MIR emissions (88.10% and 1.11 × 10{sup −20} cm{sup 2} for 2.95 μm emission, 75.90% and 0.38 × 10{sup −20} cm{sup 2} for 4.40 μm emission, respectively) in the Dy{sup 3+}-doped Ga–Sb–S glasses make them promising gain materials for the MIR lasers.