Theory of magnetic-field enhancement of surface-field terahertz emission

被引：62

作者：

Johnston, MB ^{[1
]}

Whittaker, DM ^{[1
]}

Corchia, A ^{[1
]}

Davies, AG ^{[1
]}

Linfield, EH ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 04期

关键词：

D O I：

10.1063/1.1433187

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a theoretical treatment of surface-field THz generation in semiconductors, which explains the power enhancement observed when a magnetic field is applied. Our model consists of two parts: a Monte Carlo simulation of the dynamics of carriers generated by a subpicosecond optical pulse, and a calculation of the resulting THz radiation emitted through the semiconductor surface. The magnetic field deflects the motion of the carriers, producing a component of the THz dipole parallel to the surface. This causes the power transmitted through the surface to be increased by more than one order of magnitude. (C) 2002 American Institute of Physics.

引用

页码：2104 / 2106

页数：3

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