Polydispersed Nd3+:YVO4+SiO2 powders for highly efficient random lasers
Carregando...
Data
Data de publicação:
2020
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
SPIE PHOTONICS WEST; SPIE OPTO
ODS
Exportar
Resumo
Random lasers are cheap and easy to fabricate, having several different applications such as early cancer detection,
encryption and Speckle-free imaging. However, few fabricated random lasers present high efficiency, which limits their
possible applications. In a recent work, our group achieved a record efficiency by developing random lasers that use
compacted, polydispersed yttrium vanadate doped with neodymium (Nd3+:YVO4 ) powders to create separate regions for
gain and light diffusion. Large particles are responsible for the light diffusion, while the small particles that occupy the
spaces between them create gain pockets, absorbing the pumped light. In this work, this strategy is refined by using
passive particles (SiO2) for light diffusion, restricting the laser active particles to the gain pockets. The first attempt with
this strategy used 30% of Nd3+:YVO4 small powders and 70% of large SiO2 particles. Without any further optimization,
the result achieved is already 40% of the highest obtained efficiency in the previously studied Nd3+:YVO4 polydisperse
sample, showing a promising result to further improve this new strategy and reach even larger efficiencies with less laser
active material.
Como referenciar
DIPOLD, JESSICA; SILVA, DANILO A.A. da; BERECZKI, ALLAN; JIMENEZ-VILLAR, E.; WETTER, NIKLAUS U. Polydispersed Nd3+:YVO4+SiO2 powders for highly efficient random lasers. In: JIANG, SHIBIN (ed.); DIGONNET, MICHEL J.F. (ed.). In: SPIE PHOTONICS WEST; SPIE OPTO, February 1-6, 2020, San Francisco, USA. Proceedings... Washington, USA: SPIE, 2020. p. 112760N-1 - 112760N-8. (Proceedings SPIE 11276, Optical Components andMaterials XVII). DOI: 10.1117/12.2545028. Disponível em: http://repositorio.ipen.br/handle/123456789/31562. Acesso em: 18 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.