Title :
Frequency-selective surfaces analyzed by THz-time-domain spectroscopy
Author :
Winnewisser, C. ; Lewen, F. ; Weinzierl, J. ; Helm, H.
Author_Institution :
Dept. of Molecular & Opt. Phys., Albert-Ludwigs-Univ., Freiburg, Germany
Abstract :
The transmission and phase shift characteristics of dichroic high-pass and cross-shaped grid bandpass filters were measured in the region from 0.1 to 1.5 THz with an electro-optic (eo) sampling THz-time-domain spectrometer. Good agreement with applied transmission theories is found. In this spectral region, which is difficult to access by conventional means, the knowledge of the frequency response of these frequency-selective surfaces (FSS) is important for applications in frequency mixing and multiplying experiments. Alternatively, FSS´s permit temporal shaping of THz pulses for frequency selective ultrafast experiments in the THz range
Keywords :
band-pass filters; dichroism; frequency response; high-speed optical techniques; optical filters; optical pulse shaping; submillimetre wave measurement; submillimetre wave spectroscopy; 0.1 to 1.5 THz; THz frequency selective ultrafast experiments; THz pulse shaping; THz-time-domain spectroscopy; applied transmission theories; cross-shaped grid bandpass filters; dichroic high-pass grid bandpass filters; electro-optic sampling THz-time-domain spectrometer; frequency mixing; frequency multiplying experiments; frequency response; frequency-selective surfaces; phase shift characteristics; spectral region; temporal shaping; transmission characteristics; Apertures; Band pass filters; Electromagnetic waveguides; Frequency selective surfaces; Gallium arsenide; Optical filters; Optical polarization; Optical pumping; Optical refraction; Spectroscopy;
Conference_Titel :
Terahertz Electronics Proceedings, 1998. THz Ninety Eight. 1998 IEEE Sixth International Conference on
Conference_Location :
Leeds
Print_ISBN :
0-7803-4903-2
DOI :
10.1109/THZ.1998.731720
