Diffraction enhanced transparency (DET) using frequency detuned and displaced resonant rods

N.J.J. van Hoof, A. Bhattacharya, A. Halpin, J. Gómez Rivas

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

A periodic lattice of frequency-detuned and displaced resonant metallic rods is used to generate diffraction enhanced transparency (DET) at terahertz frequencies. Using far-field spectroscopy, we demonstrate the appearance of a sharp transmission line in the otherwise broad extinction spectrum of the rod array, accompanied by strong group delay at the frequency of the transparency. Probing further with near-field microscopy we unravel the underlying mode profiles of this structure. We recover a quadrupolar field distribution in the near-field of each unit cell of the array, that arises due to the interference between lattice modes corresponding to the individual rods, resulting in a transparency.

Original languageEnglish
Title of host publication42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017
PublisherIEEE Computer Society
Number of pages2
ISBN (Electronic)978-1-5090-6050-4
DOIs
Publication statusPublished - 12 Oct 2017
Event42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2017) - Cancun, Mexico
Duration: 27 Aug 20171 Sep 2017
Conference number: 2017
http://www.cio.mx/irmmw-thz2017/

Conference

Conference42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2017)
Abbreviated titleIRMMW-THz
CountryMexico
CityCancun
Period27/08/171/09/17
Internet address

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