Watt-level 815 nm lasing from Tm 3+ -doped fluorotellurite glass fibers

Tm -doped fluorotellurite fibers based on TeO -BaF -Y O (TBY) glasses were fabricated by using a rod-in-tube method. By using an 81 cm-long Tm -doped fluorotellurite fiber as the gain medium and a 1400 / 1570 nm dual-wavelength pump technique, lasing at 815 nm was obtained for a threshold pump power...

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Bibliographic Details
Published inOptics letters Vol. 48; no. 24; p. 6476
Main Authors Wang, Junjie, Jia, Zhixu, Ren, Yingshuai, Zhang, Chuanze, Ohishi, Yasutake, Qin, Weiping, Qin, Guanshi
Format Journal Article
LanguageEnglish
Published United States 15.12.2023
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Summary:Tm -doped fluorotellurite fibers based on TeO -BaF -Y O (TBY) glasses were fabricated by using a rod-in-tube method. By using an 81 cm-long Tm -doped fluorotellurite fiber as the gain medium and a 1400 / 1570 nm dual-wavelength pump technique, lasing at 815 nm was obtained for a threshold pump power of 629 mW at 1400 nm and a fixed pump power of 960 mW at 1570 nm. As the 1400 nm pump power is increased to 1803 mW, the obtained maximum output power was about 1616 mW. The corresponding optical-to-optical conversion efficiency was about 58.5%. Our results show that Tm -doped fluorotellurite fibers are promising gain media for constructing 815 nm fiber lasers.
ISSN:1539-4794
DOI:10.1364/OL.505703