SIOM OpenIR  > 强场激光物理国家重点实验室
Frequency control of the broadband ultrashort terahertz source generated from the laser induced plasma by two-color pluses
Li N(李娜); Bai Y(白亚); Liu P(刘鹏); peng@siom.ac.cn
2016
发表期刊物理学报
卷号65期号:11
摘要The terahertz (THz) radiation becomes an attractive light source utilized in molecular dynamic spectroscopy, remote sensing, medicine, communication and fundamental research. The controlling of the THz spectrum is necessary for the applications. In this paper, a method is proposed for controlling the terahertz spectra generated from the laser induced plasma by two-color pluses based on the contribution of plasma oscillation. The plasma current oscillation can shift the THz spectrum when the length of medium is less than plasma skin depth. Experimentally we use a short length of molecules by means of the molecular beam method. We investigate the changing spectrum of broadband ultrashort terahertz THz generated from a jet of nitrogen (N-2) molecules pumped with the two-color laser pulses following the varying plasma density and plasma length. With the increase of plasma density and the decrease of the plasma length, we observe the increase of THz central frequency (0.8-1.4 THz) and the broadening of the THz spectral width (0.78-1.53 THz). The analysis and the calculation show that the THz spectrum changes due to the frequency and the width of the plasma resonance. This scheme of controlling the THz spectrum by changing the plasma density and length is easier to implement and do not need to use complex shaped optical pulses. The discovery provides a new way of controlling the low-frequency broadband THz spectrum.
文章类型Article
其他摘要实验研究了双色超快强激光场作用于氮气分子束所产生的宽带太赫兹(THz)辐射光谱随等离子体介质的密度和长度的依赖关系, 发现THz辐射的中心频率随等离子体密度提高和长度减小而增大(0.8-1.4 THz), 且谱宽也随之增加(0.78-1.53 THz). 分析和计算表明, 太赫兹光谱的变化由等离子体振荡频率和谱宽决定. 该发现为等离子体宽带太赫兹辐射源的光谱操控提供了新思路.
部门归属强光
DOI10.7498/aps.65.110701
资助者National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103]
收录类别SCI
资助者National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103] ; National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; National Basic Research Program of China [2011CB808103]
WOS记录号WOS:000380364300008
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.siom.ac.cn/handle/181231/28615
专题强场激光物理国家重点实验室
通讯作者peng@siom.ac.cn
作者单位中国科学院上海光学精密机械研究所
推荐引用方式
GB/T 7714
Li N,Bai Y,Liu P,et al. Frequency control of the broadband ultrashort terahertz source generated from the laser induced plasma by two-color pluses[J]. 物理学报,2016,65(11).
APA 李娜,白亚,刘鹏,&peng@siom.ac.cn.(2016).Frequency control of the broadband ultrashort terahertz source generated from the laser induced plasma by two-color pluses.物理学报,65(11).
MLA 李娜,et al."Frequency control of the broadband ultrashort terahertz source generated from the laser induced plasma by two-color pluses".物理学报 65.11(2016).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[李娜]的文章
[白亚]的文章
[刘鹏]的文章
百度学术
百度学术中相似的文章
[李娜]的文章
[白亚]的文章
[刘鹏]的文章
必应学术
必应学术中相似的文章
[李娜]的文章
[白亚]的文章
[刘鹏]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。