Laser-induced thermoelectric current as a source of generation of THz surface electromagnetic waves
Laser-induced thermoelectric current as a source of generation of THz surface electromagnetic waves
复制标题
激光感应热电流作为太赫兹表面电磁波的产生源
DOI：
10.1070/qel16631
复制
发表时间：
2018
影响因子：
0.9
通讯作者：
V. Bychenkov
中科院分区：
文献类型：
--
作者：
A. Kuratov;A. Brantov;Y. Aliev;V. Bychenkov
发展了表面电磁波(通常是太赫兹频率范围)的激发理论，其来源是在电子密度和温度梯度交叉的条件下，强激光超短脉冲在固体靶表面产生带电的亚微米厚度的非均匀热电子层时产生的热电电流。将这种产生机制的效率与由一束高能电子离开靶而产生的瞬时表面辐射的效率进行了比较。
The theory of excitation of a surface electromagnetic wave (typically of a terahertz frequency range) is developed, the source of which is the thermoelectric current that arises when a charged inhomogeneous layer of hot electrons of submicron thickness is generated by an intense laser ultrashort pulse at the surface of a solid target under conditions of crossed electron density and temperature gradients. The efficiency of such a generation mechanism is compared with the efficiency of generation of transient surface radiation caused by a bunch of high-energy electrons leaving the target.