%0 Journal Article
%T TERAHERTZ SPECTRA EMITTED FROM HOT CARRIERS IN TWO-DIMENSIONAL SEMICONDUCTORS<br>
%A Lei Xiao-lin
%A Liu Shi-yong
%A <br>
%J 中国物理 B
%D 2001
%I 
%X We propose a simple method to calculate the spectrum of spontaneous terahertz (THz) emission from hot carriers in two-dimensional semiconductors by means of transport quantities, which are easily obtained during the process of solving the transport problem using the recently developed balance-equation approach for THz-driven transport. The method has been applied to examine the surface emission from a GaAs/AlGaAs heterojunction and the edge emission from a GaAs-based multiple quantum-well system subjected to strong dc biases. The theoretical results obtained are in reasonably good agreement with measurements.
%K terahertz emission
%K two-dimensional semiconductors
%K hot electrons
%K balance equations<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=073F2790C797D62AEF0BFADA6FC67749&yid=14E7EF987E4155E6&vid=F3090AE9B60B7ED1&iid=9CF7A0430CBB2DFD&sid=F7B726EE3ACCF328&eid=85C7135C065B9251&journal_id=1009-1963&journal_name=中国物理&referenced_num=2&reference_num=0