Generation of terahertz radiation in dielectric-metal structure irradiated by a femtosecond laser pulse

被引：4
|
作者：
Grishkov, Vyacheslav E. [1 ]
Uryupin, Sergey A. [1 ]
机构：
[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
来源：
OPTICS LETTERS | 2020年 / 45卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
LOW-FREQUENCY RADIATION; OPTICAL RECTIFICATION; EMISSION; SURFACE; FILMS;
D O I：
10.1364/OL.45.000041
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Generation efficiency of THz radiation in the skin layer of metal increases significantly when a nanolayer of dielectric is deposited on the metal surface. Additional amplification of the generation occurs if a weakly focused femtosecond pulse affects a structure where electron collision frequency in the metal is greater than the inverse duration of the pulse. (C) 2019 Optical Society of America
引用
收藏
页码：41 / 44
页数：4
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