ELECTRON DYNAMICS IN COPPER METALLIC NANOPARTICLES PROBED WITH FEMTOSECOND OPTICAL PULSES

被引:251
|
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
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.
引用
收藏
页码:4702 / 4705
页数:4
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