ELECTRON DYNAMICS IN COPPER METALLIC NANOPARTICLES PROBED WITH FEMTOSECOND OPTICAL PULSES

被引：252
作者：
BIGOT, JY
MERLE, JC
CREGUT, O
DAUNOIS, A
机构：
[1] Insitut de Physique et Chimie des Matériaux de Strasbourg, Groupe d'Optique Nonlinéaire et d'Optoélectronique, Unité Mixte 380046 CNRS-ULP-EHICS, 67037 Strasbourg Cedex
来源：
PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 25期
关键词：
D O I：
10.1103/PhysRevLett.75.4702
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The thermalization of electrons in copper nanoparticles embedded in glass is investigated using femtosecond pump-probe spectroscopy. The time dependent induced transmission is enhanced near the surface plasmon resonance of the nanoparticles, as opposed to the static one obtained with thermomodulation measurements. In addition, a slowing of the process of electron cooling to the lattice temperature is observed at the plasmon resonance. These observations show the importance of quasiparticle collisions in confined metallic structures.
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页码：4702 / 4705
页数：4
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