By Professor Kazuyuki Hirao, Dr. Tsuneo Mitsuyu, Dr. Jinhai Si, Dr. Jianrong Qiu (auth.), Professor Kazuyuki Hirao, Dr. Tsuneo Mitsuyu, Dr. Jinhai Si, Dr. Jianrong Qiu (eds.)
This ebook specializes in chosen subject matters that are new and of primary value within the program of lively glasses in photonic units. lots of the chapters care for glasses less than the motion of upper electromagnetic fields, equivalent to these produced through femtosecond lasers. They disguise the construction and research of caused constructions in glasses and a few useful units utilizing energetic glasses. This publication is designed for either graduate scholars and researchers within the field.
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Extra resources for Active Glass for Photonic Devices: Photoinduced Structures and Their Application
Nonequilibrium thermodynamics including an energy transfer to the lattice system through scattering processes or a thermal diffusion to the glass matrix should be considered. To investigate the nonequilibrium thermodynamics of the whole system, at first, a thermal diffusion from a metal nanoparticle to the glass matrix by a simple diffusion equation is considered, 26 1. 16) where Dglass is the diffusivity of heat in the glass matrix. 4 X 10- 3 cm2 S-l at room temperature . 16), the thermal distribution function outside of the metallic nanoparticle can be obtained as a function of the distance r and time t.
The curve fitted using Mie scattering theory is also depicted (dotted curve). The related band structure of gold is depicted in the inset. The arrow corresponds to the pump photon energy. The dashed and dot-dashed curves show the contributions ofthe surface plasmon and the band-to-band transition in the absorption spectrum, respectively Typical time-resolved differential optical density spectra (~OD) obtained by the white-light pump-probe method are shown in Fig. , different values of T. 0 ps, the spectrum clings closely to the zero line.
19) is shown as a solid curve in Fig. 13. 28 X 10- 5 eV K- 1 . The curve very nearly reproduces the temporal change in reff. The result leads to the following important conclusion: the transient response of reff is mainly governed by the e-p scattering term. 52 - - - - - - - - - - - - . - - -...... o_ pej 5 10 15 Delay Time (ps) Fig. 13. 19). 19) deduced from Fig. 11 that the lattice temperature could be used as a parameter to describe the nonlinear response in the temporal change in lelf as well as the temporal change in ee over a time scale of 10 ps.