Terahertz-based target typing.

Lyo, Sungkwun Kenneth ; Wanke, Michael Clement ; Reno, John Louis ; Shaner, Eric Arthur ; Grine, Albert D. ; Barrick, Todd A.

Sandia National Laboratories

关键词: Field Effect Transistors;    Plasmons;    Sensitivity;    Detection.;    Semiconductors.;   

DOI  :  10.2172/948692
RP-ID  :  SAND2008-6125
RP-ID  :  AC04-94AL85000
RP-ID  :  948692

美国|英语

来源: UNT Digital Library

【 摘 要 】

The purpose of this work was to create a THz component set and understanding to aid in the rapid analysis of transient events. This includes the development of fast, tunable, THz detectors, along with filter components for use with standard detectors and accompanying models to simulate detonation signatures. The signature effort was crucial in order to know the spectral range to target for detection. Our approach for frequency agile detection was to utilize plasmons in the channel of a specially designed field-effect transistor called the grating-gate detector. Grating-gate detectors exhibit narrow-linewidth, broad spectral tunability through application of a gate bias, and no angular dependence in their photoresponse. As such, if suitable sensitivity can be attained, they are viable candidates for Terahertz multi-spectral focal plane arrays.