Infrared broadband all-fiber light source based on high-concentration Er3+/Yb3+ composite double-clad fiber. (18th May 2017)

• Record Type: Journal Article
• Authors: Denker, B I; Egorova, O N; Galagan, B I; Kamynin, V A; Ponosova, A A; Sverchkov, S E; Semjonov, S L; Tsvetkov, V B
• Is Part Of: Laser physics letters. Volume 14:Number 7(2017:Jul.)
• Publication Date: 2017-05-18
• Subjects: high-concentration Er3+/Yb3+ co-doped phosphate glass -- broadband fiber light source -- composite fiber; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa6ef7
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We report characteristics of an infrared broadband all-fiber light source based on a high-concentration Er 3+ /Yb 3+ co-doped phosphate core silica cladding fiber as a gain medium. The fiber blank was fabricated by the 'rod-in-tube' technique. The concentrations of rare-earth ions in a phosphate glass for the fiber core were 1.7 × 10 21 cm −3 of Yb 3+ and 1.3 × 10 20 cm −3 of Er 3+ . The source demonstrated a maximum output power about 20 mW with a fiber length of only 50 cm. Maximum bandwidth at the −10 dB level was 16.39 nm at a fiber length of 80 cm. Results from experiment indicate that using composite fiber offers good possibilities in achieving a broadband emission with a gain medium length several times shorter than that of silica fibers.