Patent
Planar diffractive device with matching diffraction spectrum
Andrei Faraon,Amir Arbabi,Yu Horie +2 more
- 19 Aug 2016
5
TL;DR: In this article, an optical metasurface is used as a diffractive optical element to split the Raman signal from the target molecule and from the reference molecule, and the target and reference signals can be detected at different locations with different photodetectors.
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Abstract: A solution containing a target molecule and a reference molecule is illuminated to obtain Raman signals. An optical metasurface is used as a diffractive optical element to split the Raman signal from the target molecule and the Raman signal from the reference molecule. The target and reference Raman signals can be detected at different locations with different photodetectors, and the target molecule concentration in the solution is determined by comparing the target and reference Raman signals.
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Citations
Patent
Dispersionless and dispersion-controlled optical dielectric metasurfaces
Ehsan Arbabi,Amir Arbabi,Seyedeh Mahsa Kamali,Yu Horie,Andrei Faraon +4 more
- 19 Jan 2017
TL;DR: In this article, the authors proposed a specific dispersion profile for the metasurfaces and fabricated a grating having similar properties as the array of pillars in a lattice, which can focus optical light over a broad wavelength range.
28
Patent
Conformal optical metasurfaces
Seyedeh Mahsa Kamali,Ehsan Arbabi,Amir Arbabi,Andrei Faraon +3 more
- 12 Apr 2016
TL;DR: In this paper, structures for scattering light at multiple wavelengths are disclosed, where scattering elements are fabricated with different geometric dimensions and arrangements, to scatter or focus light at the same focal distance for each wavelength, or at different focal distances according to the desired application.
23
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Tunable elastic dielectric metasurface lenses
Seyedeh Mahsa Kamali,Ehsan Arbabi,Amir Arbabi,Yu Horie,Andrei Faraon +4 more
- 09 Apr 2018
TL;DR: In this paper, a stretchable polymer metasurface comprised of an array of meta-atoms in stretchable polyethylene polysilicon (Polysilicon) is used to obtain desired optical properties.
6
Patent
Metasurface-assisted 3d beam shaping
Kamali Seyedeh Mahsa,Arbabi Ehsan,Faraon Andrei +2 more
- 06 Jun 2019
TL;DR: In this paper, the shape of the scatterers determines the three dimensional configuration of the output beam and is determined with iterative calculations through computational simulations, and the shape determines the phase, amplitude and polarization of an electromagnetic beam.
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Patent
Method and device for beam analysis
Matthias Manger,Christoph Husemann,Matus Kalisky,Lars Stoppe +3 more
- 05 Oct 2016
TL;DR: In this paper, a method for beam analysis in an optical system is proposed, where a plurality of beam parameters of a beam propagating along an optical axis (OA) are determined, the method comprising the following steps: splitting the beam into partial beams which have a focus offset in the longitudinal direction in relation to the optical axis.
References
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Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
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Meep: A flexible free-software package for electromagnetic simulations by the FDTD method
Ardavan Oskooi,David Roundy,Mihai Ibanescu,Peter Bermel,John D. Joannopoulos,Steven G. Johnson +5 more
TL;DR: This paper describes Meep, a popular free implementation of the finite-difference time-domain (FDTD) method for simulating electromagnetism, and focuses on aspects of implementing a full-featured FDTD package that go beyond standard textbook descriptions of the algorithm.
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Dielectric metasurfaces for complete control of phase and polarization with subwavelength spatial resolution and high transmission
TL;DR: A metasurface platform based on high-contrast dielectric elliptical nanoposts that provides complete control of polarization and phase with subwavelength spatial resolution and an experimentally measured efficiency ranging from 72% to 97%, depending on the exact design.
Metasurface holograms reaching 80% efficiency
TL;DR: The design of the hologram integrates a ground metal plane with a geometric metasurface that enhances the conversion efficiency between the two circular polarization states, leading to high diffraction efficiency without complicating the fabrication process.
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