Numerical Thermo-optical properties of Metal Nanoparticles

This paper presents a numerical study of the colloidal metal nanoparticles under the irradiation of a continuous Gaussian laser beam. The effect of the concentration of the NPs on thermo-optical properties of the colloids is also investigated. It is shown that increasing the concentration of the NPs enhances the nonlinear refractive index of the colloids using low laser power at wavelength of ۵۳۲ nm. The numerical data show that the liquids with more viscosity and less thermal expansion coefficient, lead to more concentric far-field diffraction patterns.

کلیدواژه ها:

Thermo-Optical Nonlinearity ، Far-Field Intensity ، Diffraction Pattern ، Colloidal Metal Nanoparticles ، Photonic Devices