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Experimental Evidence for Coherent Perfect Absorption in Guided-Mode Resonant Silicon Filmsopen access
- Issue Date
- Apr-2016
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- absorption; coherence, absorption; guided-mode resonance (GMR); spatial coherence; subwavelength structures; Temporal coherence; thin-film devices
- Citation
- IEEE PHOTONICS JOURNAL, v.8, no.3, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE PHOTONICS JOURNAL
- Volume
- 8
- Number
- 3
- Start Page
- 1
- End Page
- 8
- ISSN
- 1943-0655
- 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.
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Related Researcher
- Yoon, Jae Woong
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)