Open AccessExperimental Evidence for Coherent Perfect Absorption in Guided-Mode Resonant Silicon Films
Author(s) -
A. L. Fannin,
J. W. Yoon,
B. R. Wenner,
J. W. Allen,
M. S. Allen,
R. Magnusson
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2552160
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We experimentally verify a new class of coherent absorbers based on guided-mode resonance effects in periodic thin films. We design a silicon-based resonant absorber that is fabricated and tested near the 1300-nm wavelength. Implementing phase control, the device can, in principle, be switched between full absorption and full scattering. The first experimental prototype presented herein shows ~78% absorption in the in-phase state. Nearly total scattering is realized in the out-of-phase state. The experimental results agree reasonably well with theory.