Terahertz-based target typing.

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

关键词: DETECTION;    EXPLOSIONS;    FIELD EFFECT TRANSISTORS;    PLASMONS;    SENSITIVITY;    TARGETS;    TRANSIENTS Focal planes.;    Semiconductors.;    Detection.;   

DOI  :  10.2172/948692
RP-ID  :  SAND2008-6125
PID  :  OSTI ID: 948692
Others  :  TRN: US0901760

学科分类：物理（综合）

美国|英语

来源: SciTech Connect

【 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.