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Proceedings Paper

An integrated continuous-wave terahertz biosensor
Author(s): Mohammad Neshat; Daryoosh Saeedkia; Ramin Sabry; Safieddin Safavi-Naeini
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Paper Abstract

An integrated continuous-wave (CW) terahertz biosensor is proposed based on an edge-coupled terahertz photomixer source with guided-wave optical excitation scheme. In this device, two laser beams are guided inside an optical dielectric waveguide structure and being gradually absorbed by an overlying ultra-fast photoabsorbing layer, wherein a terahertz signal is generated due to photomixing phenomenon. The generated THz signal is guided by a coplanar-stripline (CPS) and is coupled to an integrated CPS resonator, which acts as a sample carrier and transducer. After interaction by bio-sample, terahertz wave is guided by a CPS line to a wide-band antenna and is detected by a THz power detector. Our performance analysis for the proposed CW terahertz biosensor supports the feasibility of the whole idea very well. The proposed device is attractive for system-on-a-chip terahertz sensors and spectrometers.

Paper Details

Date Published: 4 May 2007
PDF: 8 pages
Proc. SPIE 6549, Terahertz for Military and Security Applications V, 65490E (4 May 2007); doi: 10.1117/12.718619
Show Author Affiliations
Mohammad Neshat, Univ. of Waterloo (Canada)
Daryoosh Saeedkia, Univ. of Waterloo (Canada)
Ramin Sabry, Defence Research and Development Canada (Canada)
Safieddin Safavi-Naeini, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 6549:
Terahertz for Military and Security Applications V
James O. Jensen; Hong-Liang Cui, Editor(s)

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