Emission of THz radiation from optically excited coherent plasmons in a two-dimensional electron gas

Author

Vosseburger, M. ; Roskos, Hartmut G. ; Wolter, F. ; Waschke, C. ; Kurz, H. ; Hirakawa, Keisuke ; Wilke, L. ; Yamanaka, Keiji

Author_Institution

Inst. fur Halbleitertechnik, Tech. Hochschule Aachen, Germany

fYear

1996

fDate

7-7 June 1996

Firstpage

206

Lastpage

207

Abstract

Summary form only given. The radiative decay of grating-coupled plasmons in a two-dimensional (2D) electron gas in semiconductor heterostructures is an interesting candidate for a solid-state terahertz (THz) radiation source. We present the first observation of the emission of submillimeter radiation from optically excited coherent two-dimensional plasma oscillations at an AlGaAs-GaAs heterojunction. The surface of the sample is covered with a grating coupler, allowing the coupling of the plasmons to the THz field.

Keywords

III-V semiconductors; aluminium compounds; diffraction gratings; gallium arsenide; microwave generation; optical couplers; plasmons; semiconductor heterojunctions; semiconductor plasma; 2D electron gas; THz radiation emission; grating-coupled plasmons; optically excited coherent plasmons; radiative decay; semiconductor heterostructures; solid-state THz radiation source; submillimeter radiation; two-dimensional electron gas; Delay effects; Electron emission; Electron optics; Phonons; Plasmons; Polarization; Probes; Reflectivity; Stimulated emission; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the

Conference_Location

Anaheim, CA, USA

Print_ISBN

1-55752-444-0

Type

conf

Filename

865782