,Frequency response range of terahertz pulse coherent detection based on THz-induced time-resolved l

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:dddnnn111111
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
It has been proposed previously that the coherent detection of a terahertz (THz) pulse can be achieved based on the time-resolved luminescence quenching.In this paper,we investigate the frequency response range of this novel detection technology by simulating the motion of carriers in gallium arsenide (GaAs) by the ensemble Monte Carlo method.At room temperature,for a direct-current (DC) voltage of 20 kV/cm applied to the semiconductor (GaAs) and sampling time of 140 fs,the luminescence quenching phenomena induced by terahertz pulses with different center frequencies are studied.The results show that the quenching efficiency is independent of the THz frequency when the frequency is in a range of 0.1 THz-4 THz.However,when the frequency exceeds 4 THz,the efficiency decreases with the increase of frequency.Therefore,the frequency response range is 0.1 THz-4 THz.Moreover,when the sampling time is changed to 100 fs,the frequency response range is extended to be approximately 0.1 THz-5.6 THz.This study of the frequency-dependent characteristics of the luminescence response to the THz pulse can provide a theoretical basis for the exploration of THz detection technology.
其他文献
Metal halide perovskites have been regarded as remarkable materials for next-generation light-harvesting and light emission devices.Due to their unique optical
新课程倡导“以学生为中心,一切为学生的发展服务”的理念,教师角色发生了根本性的转变.在新课程背景下,西部农村教师应该转变观念,提高自己的课程意识、资源意识、合作意识
神农叶肥是一种新产品,不仅含有17种以上氨基酸,而且含有和氨基酸结合起来的供作物生长必需的多种微量元素(如铁、锰、锌、钼等),该产品既有明显的肥效,又有防治病害的功能
一出好戏是从好的序幕开始的,一部激扬的乐章是由优美序曲开始的,一节成功的好课也是从引人入胜的精彩导入开始的.引人入胜的导入,可以唤醒学生的求知欲,激发他们的学习兴趣.
水杨酸(Salicylic acid,SA)是植物体内产生的一种简单的酚类物质,作为植物体内源信号分子,在植物许多生理过程中起着非常重要的作用。SA能提高植物对生物胁迫和非生物胁迫的抗性
优秀的语文教师是尤其善于反思并富有语文思想的教师,语文教学成绩大面积的提高离不开一个优秀的语文老师.一个优秀的语文教师应通过以下措施提高语文教学成绩:注重基础过度,
人民日报1月份一版新闻,使人耳目一新,十分可喜。一喜新闻新。在全面开创社会主义建设新局面的今天,读者非常希望了解全国各行各业涌现出来的新人新事。报社急读者之所急,想
语文教学申,激发学生的语文学习兴趣,培养学生的独立人格和学习语文的能力,语文教师的课堂教学技巧显得尤为重要,教师必须灵活运用.
We establish a theoretical bimodal model for the complex permeability of flaky soft magnetic composite materials to explain the variability of their initial per