Continuous-wave terahertz system with a 60 dB dynamic range

We have developed a high-performance continuous-wave terahertz imaging system based on photomixing. The emitter and detector are driven by compact, unstabilized, single-mode diode lasers. The all-optoelectronic, homodyne detection scheme yields both amplitude and phase information, and with careful...

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Bibliographic Details
Published in:Applied physics letters 2005-05, Vol.86 (20), p.204104-204104-3
Main Authors: Gregory, I. S., Tribe, W. R., Baker, C., Cole, B. E., Evans, M. J., Spencer, L., Pepper, M., Missous, M.
Format: Article
Language:English
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Summary:We have developed a high-performance continuous-wave terahertz imaging system based on photomixing. The emitter and detector are driven by compact, unstabilized, single-mode diode lasers. The all-optoelectronic, homodyne detection scheme yields both amplitude and phase information, and with careful optimization and matching of both emitter and receiver, a 60 dB dynamic range, at 0.53 THz, can be routinely achieved. This replicates the performance of established pulsed THz imagers at this frequency.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1935032