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
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 / cm 2 . 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.