Nonlinear optical properties of phosphorous-doped Si nanocrystals embedded in phosphosilicate glass thin films.
Nonlinear optical properties of phosphorus (P)-doped silicon (Si) nanocrystals are studied by z-scan technique in femtosecond regime at around 1.6 eV. The nonlinear refractive index (n(2)) and nonlinear absorption coefficient (beta) of Si-ncs are significantly enhanced by P-doping. The enhancement of n(2) is accompanied by the increase of the linear absorption in the same energy region, suggesting that impurity-related energy states are responsible for the enhancement of the nonlinear optical response.
Imakita
Kenji
K
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Nada, Kobe, Japan.
Ito
Masahiko
M
Fujii
Minoru
M
Hayashi
Shinji
S
D003198:Computer Simulation; D005898:Glass / Q000737:chemistry; D008027:Light; D008422:Materials Testing; D008567:Membranes, Artificial; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010758:Phosphorus / Q000737:chemistry*; D012542:Scattering, Radiation; D017640:Silicates / Q000737:chemistry; D012825:Silicon / Q000737:chemistry*
D008567:Membranes, Artificial; D017640:Silicates; D010758:Phosphorus; D012825:Silicon