搜索结果: 1-12 共查到“光学工程 terahertz”相关记录12条 . 查询时间(0.049 秒)
Terahertz radiation, whose wavelengths lie between those of microwaves and visible light, can penetrate many nonmetallic materials and detect signatures of certain molecules. These handy qualities cou...
Tiny terahertz laser could be used for imaging,chemical detection（图）
Tiny terahertz laser imaging chemical detection
2017/8/8
Terahertz radiation — the band of the electromagnetic spectrum between microwaves and visible light — has promising applications in medical and industrial imaging and chemical detection, among other u...
Free carrier dynamics of inN nanorods investigated by time-resolved terahertz spectroscopy
2011/12/12
Ultrafast time-resolved terahertz spectroscopy is employed to investigate the carrier dynamics of indium nitride InN nanorod arrays and an epitaxial film. Transient differential transmission of tera...
Terahertz emission and spectroscopy on InN epilayer and nanostructure
Indium Nitride nanostructures THz emission THz time-domain spectroscopy non-Drude model
2011/12/12
We report a comprehensive study on THz emission and spectroscopy of indium nitride (InN) films and its nanorod arrays grown by plasma-assisted molecular beam epitaxy technique. For the enhancement of ...
Continuous wave terahertz spectrometer based on two DFB laser diodesbased on two DFB laser diodes
terahertz continuous wave spectroscopy Bragg structure
2009/7/29
In this paper, a continuous wave (cw) spectrometer in the far infrared range is presented.
Electromagnetic radiation is generated via photomixing phenomena and covers frequencies
between about 50 GH...
Domain-Reversed Lithium Niobate Single-Crystal Fibers are Potentially for Efficient Terahertz Wave Generation
Efficient Terahertz Wave Generation
2008/10/31
Nonlinear frequency conversion remains one of the dominant approaches to efficiently generate THz waves. Significant material absorption in the THz range is the main factor impeding the progress towar...
Semiconductor-Superlattice Parametric Oscillator as a Subterahertz and Possible Terahertz Radiation Source
Subterahertz Possible Terahertz
2008/10/29
We describe the operation of a semiconductor-superlattice parametric oscillator (SPO) at a subterahertz frequency (near 300 GHz). The oscillator is driven by a microwave source (frequency near 100 GHz...
A polarization maintaining air-core polymer fiber for terahertz guiding is proposed. The bandgap repels modal power from the absorbent background polymers, resulting in significant suppression of moda...
Terahertz Systems-Novel Applications for Telecom Technology
Terahertz Systems-Novel Applications Telecom Technology
2008/7/30
THz spectroscopy promises attractive applications in various fields. Commercial use requires compact, room temperature and cost effective systems. Exploiting telecom and InP technologies here delivers...
Terahertz Systems–Novel Applications of Telecom Technology
Terahertz Systems–Novel Applications Telecom Technology
2008/7/30
Terahertz spectroscopy promises attractive applications in various fields. Commerical use requires compact, room temperature and cost effective THz systems. Mature InP technology and versatile fiber c...
二维透射式Terahertz波时域谱成像研究
2007/8/20
通过THz(Terahertz)波的相位信息和振幅信息来解析出样品某些可用于成像的参量；并且对THz波相位信息成像和振幅信息成像进行了比较.结果显示：当样品对THz波的吸收比较小时，利用THz波的相位信息进行成像比通过振幅信息进行成像质量要好一些；时域谱峰值位置的漂移会对相位信息成像产生较大的影响.实验中发现输出光谱中出现了劈裂现象，即由输入的单峰变成了双峰.分析表明，这一现象是由样品内部厚度或折...
Tunable terahertz Bloch oscillations in chirped photonic crystals
Tunable terahertz Bloch oscillations chirped photonic crystals
2005/8/11
We report simulations showing tunable terahertz oscillations of the electromagnetic field provided by the Bloch oscillations of a short photonic wave packet in a tilted band structure. The struc...