Monte Carlo Simulation of THz-Pulse Generation from Semiconductor Surface

LIU Dong-feng; QIN Jia-yin

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Monte Carlo Simulation of THz-Pulse Generation from Semiconductor Surface

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- Monte Carlo Simulation of THz-Pulse Generation from Semiconductor Surface
- Acta Electronica Sinica Vol. 32, Issue 8, Pages: 1314-1317(2004)
- 作者机构：
  
  中山大学电子与通信工程系,光电材料与技术国家重点实验室,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN201
- Published：2004
- 稿件说明：
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LIU Dong-feng, QIN Jia-yin. Monte Carlo Simulation of THz-Pulse Generation from Semiconductor Surface[J]. Acta Electronica Sinica, 2004, 32(8): 1314-1317.
DOI：

LIU Dong-feng, QIN Jia-yin. Monte Carlo Simulation of THz-Pulse Generation from Semiconductor Surface[J]. Acta Electronica Sinica, 2004, 32(8): 1314-1317. DOI：

摘要

本文介绍了作者开发的基于面向对象语言C++和统一建模语言UML的半导体输运及THz辐射的蒙特卡罗模拟软件

并用该软件模拟了在强超短脉冲激光(光生载流子密度10

-3

)及强电场 (100kV/cm) 作用下GaAs的THz时域波形和相应的半导体表面局域场.通过分析THz时域波形

我们发现强外加电场下的载流子速度过冲、载流子屏蔽(或器件反应过冲)是形成THz时域波形双极结构的原因.功率谱的分析表明增加外加电场有益于提高THz的低频成份的辐射

但对高频部分(＞6THz)影响不大.

Abstract

An ensemble Monte Carlo simulator

which is developed with the object-oriented programming language C++ and unified modeling language UML

has been introduced in this paper.Using this simulator

we have simulated the local fields on the GaAs surfaces and the temporal waveforms of THz pulses when the GaAs surface is illuminated by intense sub-picosecond optical pulses (the corresponding photogenerated carrier density 10

-3

)and biased in a high applied external electrical field (100kV/cm).The power spectra show that the higher bias electric field may generate the higher power output within the range of 6THz

and beyond this range the effect of high bias fields is not obvious.

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Related Institution

Department of Electronic InformationSchool of Information EngineeringGuangdong University of TechnologyGuangzhouGuangdong 510006China

Department of Electronic Information,School of Information Engineering,Guangdong University of Technology

Dept.of Electronic Engineering,Southeast University

Department of Computer Science and Technology, Peking University

Shanghai UniversityShanghai 20072China

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