Propagation of single-cycle terahertz pulses in random media

被引：48
|
作者：
Pearce, J [1 ]
Mittleman, DM [1 ]
机构：
[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA
来源：
OPTICS LETTERS | 2001年 / 26卷 / 24期
关键词：
D O I：
10.1364/OL.26.002002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe what are to our knowledge the first measurements of the propagation of coherent, single-cycle pulses of terahertz radiation in a scattering medium. By measuring the transmission as a function of the length L of the medium, we extract the scattering mean free path l(s)(omega) over abroad bandwidth. We observe variations in l(s) ranging over nearly 2 orders of magnitude and covering the entire thin sample regime from L/l(s) much less than 1 to L/l(s) similar to 10. We also observe scattering-induced dispersive effects, which can be attributed to the additional path traveled by photons scattered at small angles. (C) 2001 Optical Society of America.
引用
收藏
页码：2002 / 2004
页数：3
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