The influence of optical properties of Au nanoparticles on their laser heating in an inert medium

The dependencies of PETN-Au nanoparticles composite radiance augmentation coefficient, transmittance and reflectance at the wavelength 532 nm on the nanoparticles' radii are calculated. The maximum radiance augmentation coefficient is observed for particles with radius 94.2 nm while the transmittance and reflectance increase monotonically with increasing particle radii. There is an absolute maximum in the product of the radiance augmentation coefficient and absorption efficiency for nanoparticles with radius 24.6 nm. The kinetics of the Au nanoparticles laser pulse heating were calculated for nanoparticles in the range 10-120 nm. The melting processes and the radiance augmentation on the sample's surface has been taken into account.