1. Experimental Evidence for Coherent Perfect Absorption in Guided-Mode Resonant Silicon Films
- Author
-
A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson
- Subjects
Temporal coherence ,guided-mode resonance (GMR) ,subwavelength structures ,spatial coherence ,coherence, absorption ,absorption ,Applied optics. Photonics ,TA1501-1820 ,Optics. Light ,QC350-467 - Abstract
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.
- Published
- 2016
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