Applied Physics A

, Volume 78, Issue 4, pp 465–469 | Cite as

Towards time-resolved THz imaging

Article

Abstract

We describe a setup that allows for the measurement of high-quality images at frequencies in the far-infrared (THz) regime of the spectrum. By using water-cooled THz emitters that are biased with a 50-kHz, ±400-V square wave, rapid delay scanning, and differential lock-in detection at 50 kHz, we attain shot-noise-limited detection of THz transients. As a result, THz transients with a large dynamic range of ∼5000 can be measured in 20 ms. We show that the THz imaging setup enables the time-resolved detection of the diffusion of gases.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Faculty of Applied Sciences, Department of Applied PhysicsDelft University of TechnologyDelftThe Netherlands
  2. 2.FOM-Institute AMOLFAmsterdamThe Netherlands

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