Cargando…

Multi-wavelength emission through self-induced second-order wave-mixing processes from a Nd(3+) doped crystalline powder random laser

Random lasers (RLs) based on neodymium ions (Nd(3+)) doped crystalline powders rely on multiple light scattering to sustain laser oscillation. Although Stokes and anti-Stokes Nd(3+) RLs have been demonstrated, the optical gain obtained up to now was possibly not large enough to produce self-frequenc...

Descripción completa

Detalles Bibliográficos
Autores principales: Moura, André L., Jerez, Vladimir, Maia, Lauro J. Q., Gomes, Anderson S. L., de Araújo, Cid B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4558712/
https://www.ncbi.nlm.nih.gov/pubmed/26334517
http://dx.doi.org/10.1038/srep13816
Descripción
Sumario:Random lasers (RLs) based on neodymium ions (Nd(3+)) doped crystalline powders rely on multiple light scattering to sustain laser oscillation. Although Stokes and anti-Stokes Nd(3+) 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 Nd(3+) doped YAl(3)(BO(3))(4) monocrystals excited at 806 nm, in resonance with the Nd(3+) transition (4)I(9/2) → (4)F(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 Nd(3+) 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.