Cost-efficient delay generator for fast terahertz imaging

We present a fast and low-cost delay generator for terahertz (THz) waves that transfers a rotational motion of a transparent dielectric cube into an effective THz delay. The device is easily implemented in the THz beam path and allows for coherent sampling over 40 ps with a scan rate of hundreds of...

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Bibliographic Details
Published in:Optics letters 2014-08, Vol.39 (16), p.4863-4866
Main Authors: Probst, T, Rehn, A, Busch, S F, Chatterjee, S, Koch, M, Scheller, M
Format: Article
Language:English
Subjects:
Beams (radiation)
Coherence
Delay
Dielectrics
Generators
Imaging
Rotational
Sampling
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Summary:We present a fast and low-cost delay generator for terahertz (THz) waves that transfers a rotational motion of a transparent dielectric cube into an effective THz delay. The device is easily implemented in the THz beam path and allows for coherent sampling over 40 ps with a scan rate of hundreds of hertz. Furthermore, we show that our approach is particularly suitable for fast THz imaging.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.39.004863