Abstract

In recent years, a multitude of applications for terahertz radiation have been developed ranging from fundamental semiconductor research [1] to tomographic imaging [2]. Terahertz imaging benefits from the opacity of many materials and the specific spectral finger-prints of a multitude of molecules located in the terahertz region. In this contribution, we experimentally demonstrate a novel and compact terahertz spectroscopy concept by combining both continuous-wave (CW) terahertz radiation generation and phase-sensitive detection in a single photoconductive antenna (PCA). This concept bears a significantly reduced complexity and consequently lower cost of the terahertz spectroscopy setup. We perform 2D terahertz tomography imaging and reconstruct the two-dimensional image of a hollow-core Teflon cylinder filled with α–lactose as a proof-of-concept application.

© 2015 IEEE