Intense emission at ∼3.3  µm from Er 3+ -doped fluoroindate glass fiber

Fluoroindate glass fibers with an doping concentration of ∼0.5 were fabricated by using a rod-in-tube method. Pumped by a 976 nm laser diode, intense emission at ∼3.3µ was obtained from a 40 cm long -doped fiber, which could be attributed to the transition → of ions. The calculated emission cross se...

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Bibliographic Details
Published inOptics letters Vol. 46; no. 5; p. 1057
Main Authors He, Huiyu, Jia, Zhixu, Wang, Tao, Ohishi, Yasutake, Qin, Weiping, Qin, Guanshi
Format Journal Article
LanguageEnglish
Published United States 01.03.2021
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Summary:Fluoroindate glass fibers with an doping concentration of ∼0.5 were fabricated by using a rod-in-tube method. Pumped by a 976 nm laser diode, intense emission at ∼3.3µ was obtained from a 40 cm long -doped fiber, which could be attributed to the transition → of ions. The calculated emission cross section at ∼3.3µ was ∼3×10 , which was ∼1.5 times larger than that of transitions : → and : → . In addition, broad emissions ranging from 3.1 µm to 3.85 µm were obtained in the -doped fiber under a 976 nm/1973 nm dual-wavelength pumping scheme. Our results indicated that -doped fluoroindate glass fibers had the potential for constructing efficient ∼3.3µ fiber lasers.
ISSN:1539-4794
DOI:10.1364/OL.417731