Open AccessPhotoconductive generation and detection of THz-bandwidth pulses using near-field coupling to a free-space metallic slit waveguide
Author(s) -
Robert Smith,
Afshin Jooshesh,
Jinye Zhang,
T.E. Darcie
Publication year - 2017
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.25.026492
Subject(s) - optics , terahertz radiation , materials science , waveguide , bandwidth (computing) , optoelectronics , detector , aperture (computer memory) , physics , telecommunications , computer science , acoustics
THz-bandwidth pulses are generated, transmitted along a gold-plated stainless steel metallic slit waveguide, and detected with 1.5 THz bandwidth and 60 dB dynamic range. The source and detector were edge-pumped slotlines on LT-GaAs placed within the near-field region of the waveguide entrance and exit aperture. The motivation for this work was to develop a complete dispersion-free THz system which was simple to manufacture and could be utilized for free-space waveguide experimentation.