Fabrication and characterization of 115 GHz double split ring resonator
Abstract
Electron paramagnetic resonance (EPR) spectroscopy requires an efficient coupling of electromagnetic waves over a sample volume. However, it is often challenging when EPR is operated in the terahertz (THz) range. Here, we report the fabrication and characterization of double split-ring resonators (DSRRs) designed to operate at a frequency of 115 GHz. The DSRR device consists of the outer and inner rings with diameters of 190 and 50 μm, respectively. Both rings have gaps, located on opposite sides, to concentrate and enhance the induced magnetic fields within the rings. The DSRR devices are fabricated using a wet-etch photolithography process. We also develop a characterization method to measure the resonant frequencies and Q-factors of individual DSRR devices. The developed DSRR fabrication method is useful for the development of resonators for various THz experiments.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (8)
Gem Nakamura
Department of Physics and Astronomy, University of Southern California 1 , Los Angeles, California 90089,
Yuhang Ren
Department of Physics and Astronomy, University of Southern California 1 , Los Angeles, California 90089,
Michael Coumans
Department of Chemistry, University of Southern California 2 , Los Angeles, California 90089,
Laura Mugica
Department of Chemistry, University of Southern California 2 , Los Angeles, California 90089,
Sola M. Takahashi
Department of Chemistry, University of Southern California 2 , Los Angeles, California 90089,
Anton Savitsky
Faculty of Physics, Technical University Dortmund, Otto-Hahn Straße 4a, Dortmund 44227, Germany
Dieter Suter
Fakultät Physik, Technische Universität Dortmund 3 , Dortmund D-44221,
Susumu Takahashi
Department of Physics and Astronomy, University of Southern California 1 , Los Angeles, California 90089,