Sivan, Yonatan and Un, Ieng Wai and Kalyan, Imon and Lin, Kai-Qiang and Lupton, John M. and Bange, Sebastian (2023) Crossover from Nonthermal to Thermal Photoluminescence from Metals Excited by Ultrashort Light Pulses. AMER CHEMICAL SOC, WASHINGTON.
Full text not available from this repository. (Request a copy)Abstract
Photoluminescence from metal nanostructuresfollowing intense ultrashortillumination is a fundamental aspect of light-matter interactions.Surprisingly, many of its basic characteristics are under ongoingdebate. Here, we resolve many of these debates by providing a comprehensivetheoretical framework that describes this phenomenon and support itby an experimental confirmation. Specifically, we identify aspectsof the emission that are characteristic to either nonthermal or thermalemission, in particular, differences in the spectral and electricfield dependence of these two contributions to the emission. Overall,nonthermal emission is characteristic of the early stages of lightemission, while the later stages show thermal characteristics. Theformer dominate only for moderately high illumination intensitiesfor which the electron temperature reached after thermalization remainsclose to room temperature.
| Item Type: | Other |
|---|---|
| Uncontrolled Keywords: | GOLD NANORODS; ELECTRON DYNAMICS; NONEQUILIBRIUM ELECTRON; EMISSION; NANOPARTICLES; LUMINESCENCE; TEMPERATURE; NONLINEARITIES; SPECTROSCOPY; RELAXATION; plasmonics; electron nonequilibrium; photoluminescence; thermo-optic effects; metalnanoparticles |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group John Lupton |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2024 13:03 |
| Last Modified: | 23 Apr 2024 13:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60162 |
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