Open AccessDevelopment of a multi-channel time-to-space terahertz spectrometer
Author(s) -
Eva-Maria Stübling,
Stefan Busch,
Jan C. Balzer,
Martín Koch
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023146
Subject(s) - terahertz radiation , optics , spectrometer , terahertz spectroscopy and technology , channel (broadcasting) , footprint , antenna (radio) , head (geology) , amplitude , pulse (music) , physics , optoelectronics , materials science , computer science , telecommunications , detector , paleontology , geomorphology , geology , biology
We present a compact sensor head for a multi-channel terahertz (THz) spectroscopy system. A THz pulse generated by a photoconductive antenna is split into spatially separated sub-pulses, which have different transit times. The time-dependent order of the sub-pulses can be translated into a spatial resolution. By using only one pair of antennas the developed sensor head provides up to 20 individual measurement zones with full amplitude and phase information. The sensor head can be integrated into two boxes with a small footprint so that the system is well suited for industrial applications.