A High Signal-to-Noise Ratio, Coherent, Frequency-Domain THz Spectrometer Employed To Characterize Explosive Compounds

Authors

Joseph R. Demers, Emcore Corporation
Ronald T. Logan, Emcore Corporation
Normand J. Bergeron, Bureau of Alcohol Tobacco Firearms and Explosives
Elliott R. Brown, Wright State University - Main CampusFollow

Document Type

Article

Publication Date

1-1-2008

Identifier/URL

43001834 (Pure)

Abstract

A compact terahertz frequency domain spectrometer realized through photo-mixing of two distributed feedback (DFB) diode lasers in ErAs:GaAs is shown to have a signal-to-noise ratio of 80 dB*Hz at 200 GHz and 60 dB*Hz at 1 THz. Continuous frequency sweeping is demonstrated with better than 1 GHz resolution from 200 GHz to 1.85 THz. The system is employed for the characterization of several explosives.

Repository Citation

Demers, J. R., Logan, R. T., Bergeron, N. J., & Brown, E. R. (2008). A High Signal-to-Noise Ratio, Coherent, Frequency-Domain THz Spectrometer Employed To Characterize Explosive Compounds. 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves.
https://corescholar.libraries.wright.edu/physics/1268

DOI

10.1109/ICIMW.2008.4665534