期刊
SCIENTIFIC REPORTS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep13816
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资金
- Brazilian Agency: Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Brazilian Agency: Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Brazilian Agency: Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE)
- Brazilian Agency: Fundacao de Amparo a Pesquisa do Estado de Goias (FAPEG)
- CNPq
Random lasers (RLs) based on neodymium ions (Nd3+) doped crystalline powders rely on multiple light scattering to sustain laser oscillation. Although Stokes and anti-Stokes Nd3+ RLs have been demonstrated, the optical gain obtained up to now was possibly not large enough to produce self-frequency conversion. Here we demonstrate self-frequency upconversion from Nd3+ doped YAl3(BO3)(4) monocrystals excited at 806 nm, in resonance with the Nd3+ transition I-4(9/2) -> F-4(5/2). Besides the observation of the RL emission at 1062 nm, self-converted second-harmonic at 531 nm, and self-sum-frequency generated emission at 459 nm due to the RL and the excitation laser at 806 nm, are reported. Additionally, second-harmonic of the excitation laser at 403 nm was generated. These results exemplify the first multi-wavelength source of radiation owing to nonlinear optical effect in a Nd3+ doped crystalline powder RL. Contrary to the RLs based on dyes, this multi-wavelength light source can be used in photonic devices due to the large durability of the gain medium.
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