Work

A family of low-loss high-concentration rare-earth-doped Ga-As-Sb-S chalcogenide glass fibers for mid-infrared laser application

Year: 2025

Type: article

Abstract: This study presents what we believe to be a novel chalcogenide glass composition, Ga 0.8 As 34.2 Sb 5 S 60 , as a gain medium for mid-infrared fiber lasers. A systematic investigation was conducted on the thermal stability, absorption, and mid-infrared emission properties of rare-earth (Tm 3+ , Ho 3+ , Dy 3+ , Pr 3+ ) -doped glasses. Few-mode double-clad fibers were fabricated, exhibiting a high rare-earth solubility up to 2000 ppmw and record-low optical losses (0.31 dB/m for Ho 3+ -doped fiber and 0.57 dB/m for Pr 3+ -doped fiber). Dy 3+ - and Tm 3+ -doped fibers also achieved low losses of approximately 1-2 dB/m at present. Combined with the high rare-earth solubility and excellent thermal stability, these fibers demonstrate significant potential for high-performance fiber lasers operating in the 2-5 µm wavelength range.

Source: Optics Express

DOI: 10.1364/oe.558933

Authors: Jinchang Zhang, Yantao Xu, Xusheng Xiao, Jian Cui, Haitao Guo

Language: English

Topic: Glass properties and applications

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Natural Science Foundation of Shaanxi Province

Awards: G1304138925, G2918684427, G3166802889, G5169730903, G7702662623