Radiative decay of optically excited coherent plasmons in a two-dimensional electron gas

被引：36

作者：

Vosseburger, MV ^{[1
]}

Roskos, HG ^{[1
]}

Wolter, F ^{[1
]}

Waschke, C ^{[1
]}

Kurz, H ^{[1
]}

Hirakawa, K ^{[1
]}

Wilke, I ^{[1
]}

Yamanaka, K ^{[1
]}

机构：

[1] UNIV TOKYO,INST IND SCI,MINATO KU,TOKYO 106,JAPAN

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1996年 / 13卷 / 05期

关键词：

D O I：

10.1364/JOSAB.13.001045

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the observation of coherent submillimeter-wave emission from optically excited plasmons in a two-dimensional electron gas. Phase-synchronous plasma oscillations are induced by femtosecond optical pulses generating electron-hole pairs in the accumulation channel of an AlGaAs/GaAs heterostructure. The radiative decay of the grating-coupled plasmons is traced in time by terahertz-emission spectroscopy. An analysis of the data suggests that ultrafast thermalization and current surges are the plasmon-driving mechanism. (C) 1996 Optical Society of America.

引用

页码：1045 / 1053

页数：9

共 31 条

[1] PERIODIC GRATING-GATE SCREENING OF PLASMONS IN HETEROJUNCTION STRUCTURES [J].