Ultrafast response of nonlinear refractive index of silver nanocrystals embedded in glass

被引：129

作者：

Hamanaka, Y ^{[1
]}

Nakamura, A

Omi, S

Del Fatti, N

Vallée, F

Flytzanis, C

机构：

[1] Nagoya Univ, Grad Sch Engn, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Grad Sch Engn, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[3] HOYA Corp, Mat Res Lab, Tokyo 1960021, Japan

[4] Ecole Polytech, CNRS, Opt Quant Lab, F-91128 Palaiseau, France

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 12期

关键词：

D O I：

10.1063/1.124798

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultrafast Kerr-type nonlinearities and relaxation dynamics of photoexcited electrons in silver nanocrystals embedded in glass have been investigated by means of femtosecond pump and probe spectroscopy. The transient absorption spectrum induced by the surface plasmon excitation shows a redshift and broadening of the surface plasmon band. The additional broadening is ascribed to the increase of surface plasmon damping and the redshift originates from a change in the real part of the dielectric function of the silver nanocrystals due to nonequilibrium electron heating. The observed redshift yields the nonlinear refractive index n(2) of +2.4x10(-10) esu and its time response is 1.9 ps. (C) 1999 American Institute of Physics. [S0003-6951(99)01938-5].

引用

页码：1712 / 1714

页数：3

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