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Coherent control of high efficiency metasurface beam deflectors with a back partial reflector
- Source :
- APL Photonics, Vol 2, Iss 4, Pp 046104-046104-10 (2017)
- Publication Year :
- 2017
- Publisher :
- AIP Publishing, 2017.
-
Abstract
- Recently, coherent control of absorption in metallic metasurfaces has been demonstrated, and this phenomenon was applied to intriguing light-by-light switching operation. Here we experimentally demonstrate coherent control of beam deflection by high-efficiency metasurfaces for the first time. Although the beam deflection efficiency by a metasurface is generally small, high-efficiency metasurfaces, which consist of a single layer metasurface with a back reflector, are known to exhibit significantly high deflection efficiency. A key point of our study is to replace the back reflector with a partial reflector instead, which enables light-by-light control of a high-efficiency metasurface with a pair of counter-propagating coherent beam inputs. By adjusting the partial reflector thickness appropriately, the proposed device outperforms ones without a reflector, especially for the deflection efficiency. We finally experimentally demonstrate the expected operation of the fabricated device at a visible wavelength, which reveals that the deflection efficiency of 45% (49% in theory). This result demonstrates highly efficient light-by-light control of the beam deflection by a metasurface, which opens up possible applications to ultrathin photonic devices for linear all-optical switching and logic functions.
- Subjects :
- lcsh:Applied optics. Photonics
Back reflector
Materials science
Computer Networks and Communications
business.industry
lcsh:TA1501-1820
Physics::Optics
Reflector (antenna)
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Atomic and Molecular Physics, and Optics
010309 optics
Optics
Deflection (engineering)
Coherent control
0103 physical sciences
Optoelectronics
0210 nano-technology
business
Absorption (electromagnetic radiation)
Single layer
Beam (structure)
Visible spectrum
Subjects
Details
- ISSN :
- 23780967
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- APL Photonics
- Accession number :
- edsair.doi.dedup.....b00c184b11787410351a035495667896