Chinese Optics Letters, 2018, 16 (1): 011403, Published Online: Jul. 17, 2018  

Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO3:Er

Author Affiliations
Key Laboratory of Computer Vision and System of Ministry of Education, Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China
Abstract
A solid-state green-light-emitting upconversion coherent random laser was realized by pumping macroporous erbium-doped lithium niobate with a 980 nm laser. The lasing threshold was determined to be about 40 kW/cm2. Above the threshold, the emission intensity increased sharply with the increasing pump intensity. Moreover, a narrow multi-peaks structure was observed in the green-light-emission band, and the positions of lasing lines were various at different angles. The results were the direct evidences of coherent random lasing emission from macroporous erbium-doped lithium niobate. These phenomena were attributed to the coexistence of upconversion emission and a multiple scattering feedback mechanism.

Fan Shi, Meng Zhao, Chen Jia, Yufeng Zhao, Shengyong Chen. Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO3:Er[J]. Chinese Optics Letters, 2018, 16(1): 011403.

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