𝔖 Bobbio Scriptorium
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All-electronic terahertz spectrometer for biosensing

✍ Scribed by Christian Debus; Gunnar Spickermann; Michael Nagel; Peter Haring Bolívar

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
370 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A compact and cost‐efficient all‐electronic terahertz (THz) system is presented for the spectroscopic read‐out of marker‐free THz biosensor chips. The table‐top system is based on only one oscillator for emitter and quasi‐heterodyne detector operation. Frequency mixing is applied to perform THz signal frequency sweeps from 220 to 320 GHz in less than 250 μs. The concept is explained and demonstrated at exemplary biochip measurements. Results and performance of the electronic system are compared with the laser‐based THz‐time‐domain spectroscopy. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2889–2902, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26392

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