Nonlinear optical properties of near-infrared region Ag(2)S quantum dots pumped by nanosecond laser pulses

This study investigates near-infrared region Ag(2)S quantum dots (QDs) and their nonlinear optical response under 532 nm nanosecond laser pulses. Our experimental result shows that nonlinear transmission is reduced from 0.084 to 0.04. The observed narrowing behavior of the output pulse width shows s...

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Detalles Bibliográficos
Autores principales: Liu, Li-wei, Hu, Si-yi, Dou, Yin-ping, Liu, Tian-hang, Lin, Jing-quan, Wang, Yue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2015
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4578410/
https://www.ncbi.nlm.nih.gov/pubmed/26425430
http://dx.doi.org/10.3762/bjnano.6.182
Descripción
Sumario:This study investigates near-infrared region Ag(2)S quantum dots (QDs) and their nonlinear optical response under 532 nm nanosecond laser pulses. Our experimental result shows that nonlinear transmission is reduced from 0.084 to 0.04. The observed narrowing behavior of the output pulse width shows superior optical limiting. We discuss the physical mechanisms responsible for the nonlinear optical response of the QDs. The average size of the nanocrystals was 5.5 nm. Our results suggest the possibility of using these Ag(2)S QDs for photoelectric, biosensor, optical ranging, and self-adaptive technologies.

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