EMISSION OF SUBMILLIMETER ELECTROMAGNETIC-WAVES BY COHERENT PHONONS

被引:171
作者
DEKORSY, T [1 ]
AUER, H [1 ]
WASCHKE, C [1 ]
BAKKER, HJ [1 ]
ROSKOS, HG [1 ]
KURZ, H [1 ]
WAGNER, V [1 ]
GROSSE, P [1 ]
机构
[1] RHEIN WESTFAL TH AACHEN,INST PHYS 1,D-52056 AACHEN,GERMANY
关键词
D O I
10.1103/PhysRevLett.74.738
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report on the first observation of the emission of electromagnetic radiation from coherent lattice vibrations in a semiconductor. Coherent optical phonons are excited by ultrashort laser pulses in single-crystal tellurium. THz frequency radiation emitted by the Dember-field-driven phonons is detected by time-resolved THz-emission spectroscopy. The measurements are complemented by optical pump-probe experiments with a polarization-sensitive detection scheme utilizing the symmetry of the Raman tensor. © 1995 The American Physical Society.
引用
收藏
页码:738 / 741
页数:4
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