Related Experiment Video
Updated: May 22, 2026
Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
Published on: August 30, 2012
A tapered parallel plate waveguide for frequency up-conversion of terahertz radiation
A Nishida1, H Kashiwazaki, S Yoshida
1Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan. nishida@ef.eie.eng.osaka-u.ac.jp
Abstract:
A tapered parallel plate waveguide was developed for frequency up-conversion experiments in the terahertz (THz) region by flash ionization. The element at the plasma-source-wave interaction area determines the conversion efficiency. It causes THz pulses to converge to a narrow plate separation, which is smaller than the wavelength. The waveguide exhibited good performance for transmitting p-polarized THz pulses in a 50 μm separation, making it suitable for flash ionization experiments.
