Intense emission at ∼3.3 µm from Er3+-doped fluoroindate glass fiber

Huiyu He, Zhixu Jia, Tao Wang, Yasutake Ohishi, Weiping Qin, Guanshi Qin

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23 Scopus citations


Fluoroindate glass fibers with an Er3+ doping concentration of ∼0.5 mol% were fabricated by using a rod-in-tube method. Pumped by a 976 nm laser diode, intense emission at ∼3.3 µm was obtained from a 40 cm long Er3+doped fiber, which could be attributed to the transition 4S3/24F9/2 of Er3+ ions. The calculated emission cross section at ∼3.3 µm was ∼3 × 10−26 m2, which was ∼1.5 times larger than that of transitions Er3+ : 4F9/24I9/2 and Dy3+ : 6H13/26H15/2. In addition, broad emissions ranging from 3.1 µm to 3.85 µm were obtained in the Er3+doped fiber under a 976 nm/1973 nm dual-wavelength pumping scheme. Our results indicated that Er3+-doped fluoroindate glass fibers had the potential for constructing efficient ∼3.3 µm fiber lasers.

Original languageEnglish
Pages (from-to)1057-1060
Number of pages4
JournalOptics Letters
Issue number5
StatePublished - 1 Mar 2021
Externally publishedYes


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