Advances in femto-nano-optics: ultrafast nonlinearity of metal nanoparticles

被引:76
作者
Stoll, Tatjana [1 ]
Maioli, Paolo [1 ]
Crut, Aurelien [1 ]
Del Fatti, Natalia [1 ]
Vallee, Fabrice [1 ]
机构
[1] Univ Lyon 1, CNRS, FemtoNanoOpt Grp, Inst Lumiere Mat UMR5306, F-69622 Villeurbanne, France
关键词
NANOSCALE THERMAL TRANSPORT; ACOUSTIC VIBRATIONAL-MODES; INTERBAND ABSORPTION-EDGE; SINGLE GOLD NANOPARTICLES; NONEQUILIBRIUM ELECTRON; SILVER NANOPARTICLES; AQUEOUS-SOLUTION; NOBLE-METALS; TEMPERATURE-DEPENDENCE; COHERENT EXCITATION;
D O I
10.1140/epjb/e2014-50515-4
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
With the recent advances of experimental techniques, the nonlinear ultrafast optical response of metal nano-objects can now be investigated both on ensembles and on single nanoparticles. Its connection with the metal electronic and lattice kinetics is studied on the basis of a model describing the wavelength and time-dependent modifications of the object material dielectric function. Its application is illustrated in the case of single silver nanospheres and gold nanorods, as well as on ensembles of noble metal nanoparticles and metal-semiconductor nano-hybrids. This quantitative analysis also permits to elucidate the physical mechanisms at the origin of ultrafast nonlinearities in confined metals at different timescales.
引用
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页数:19
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