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Cost-efficient delay generator for fast terahertz imaging

2014; Optica Publishing Group; Volume: 39; Issue: 16 Linguagem: Inglês

10.1364/ol.39.004863

1539-4794

T. Probst, Arno Rehn, Stefan Busch, Sangam Chatterjee, Martín Koch, Maik Scheller,

Spectroscopy and Laser Applications

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.