Multi-channel homodyne detection of continuous-wave terahertz radiation

Gregory, I.S., Tribe, W.R., Evans, M.J., Drysdale, T.D. and Cumming, D.R.S. (2005) Multi-channel homodyne detection of continuous-wave terahertz radiation. Applied Physics Letters, 87, 034106. (doi:10.1063/1.1990249)

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Publisher's URL: http://dx.doi.org/10.1063/1.1990249

Abstract

We demonstrate the principle of multichannel spectral data capture using an all-optoelectronic terahertz photomixing system. Two independent laser diodes, each emitting in multiple longitudinal modes, are used to generate and detect over ten terahertz frequencies simultaneously. The spectral composition can be altered by tuning the lasers, and filtering is achieved through the use of resonant antennas and tunable photonic crystal filters. Potential applications include gas phase spectroscopy and explosives detection.

Item Type:Articles
Keywords:homodyne detection, submillimetre wave spectra, microwave photonics, semiconductor lasers, laser modes, submillimetre wave generation, submillimetre wave detectors, laser tuning, antennas, photonic crystals, optical filters.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Drysdale, Dr Timothy
Authors: Gregory, I.S., Tribe, W.R., Evans, M.J., Drysdale, T.D., and Cumming, D.R.S.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
ISSN:0003-6951

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