SUBPICOSECOND PLASMON RESPONSE - BUILDUP OF SCREENING

被引：79

作者：

ELSAYED, K ^{[1
]}

SCHUSTER, S ^{[1
]}

HAUG, H ^{[1
]}

HERZEL, F ^{[1
]}

HENNEBERGER, K ^{[1
]}

机构：

[1] UNIV ROSTOCK, ABT THEORET PHYS, FACHBEREICH PHYS, D-18051 ROSTOCK, GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.49.7337

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The screened Coulomb Keldysh propagator is evaluated in the time-domain for ultra-short-pulse laser excitation of a semiconductor using the nonequilibrium Green-function technique. The buildup of screening in the time interval during and shortly after the pulse excitation is treated. A time-dependent plasmon-pole approximation is derived and shown to give an excellent description of the dynamics of screening after a resonant femtosecond

引用

页码：7337 / 7344

页数：8

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