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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 4, April 2000

Table of Contents for this issue

Complete paper in PDF format

Characterization and Application of Dichroic Filters in the 0.1-3-THz Region

Carsten Winnewisser, Frank T. Lewen, Michael Schall, Markus Walther and Hanspeter Helm

Page 744.

Abstract:

Low-loss dichroic filters, a subgroup of frequency-selective components, have been characterized by terahertz time-domain spectroscopy in the region from 0.1 to 3 THz and with Fourier transform spectroscopy. The two data sets are fully consistent. The time-domain spectrometer is used to investigate the phase velocity behavior of dichroic filters. The dichroic filters have various applications in frequency mixing, multiplying, and diplexing experiments. In a novel application, cascaded filters were used to limit the terahertz pulse bandwidth and to monitor molecular transitions of atmospheric water vapor in a selected frequency band.

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