Terahertz spectral signatures :measurement and detection LDRD project 86361 final report.

Wanke, Michael Clement ; Brener, Igal ; Lee, Mark

Sandia National Laboratories

关键词: Signal-To-Noise Ratio;    Fourier Transform Spectrometers;    Fourier Transformations.;    Electromagnetic Theory.;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/876349
RP-ID  :  SAND2005-6921
RP-ID  :  AC04-94AL85000
RP-ID  :  876349

美国|英语

来源: UNT Digital Library

【 摘 要 】

LDRD Project 86361 provided support to upgrade the chemical and material spectral signature measurement and detection capabilities of Sandia National Laboratories using the terahertz (THz) portion of the electromagnetic spectrum, which includes frequencies between 0.1 to 10 THz. Under this project, a THz time-domain spectrometer was completed. This instrument measures sample absorption spectra coherently, obtaining both magnitude and phase of the absorption signal, and has shown an operating signal-to-noise ratio of 10{sub 4}. Additionally, various gas cells and a reflectometer were added to an existing high-resolution THz Fourier transform spectrometer, which greatly extend the functionality of this spectrometer. Finally, preliminary efforts to design an integrated THz transceiver based on a quantum cascade laser were begun.