Results 41 to 50 of about 3,540,237 (277)
Microcavities with suspended subwavelength structured mirrors
Optics express, 2018 We investigate the optical properties of microcavities with suspended subwavelength structured mirrors, such as high-contrast gratings or two-dimensional photonic crystals slabs, and focus in particular on the regime in which the microcavity free-spectral range is larger than the width of a Fano resonance of the highly reflecting structured mirror.
Næsby, Andreas, Dantan, Aurelien Romain
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Subwavelength Energy Transport Along a Dielectric Nanoparticle Chain in a Metal Slot
IEEE Photonics Journal, 2013 Subwavelength energy transportation along a dielectric nanoparticle chain in a metal slot is investigated. It is demonstrated that subwavelength resonance modes with nanoscale confinement could be well achieved in the proposed waveguide, free from the ...
Bing Shen +5 more
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Twin-Lever Multifunctional Meta-Optics With High Longitudinal Tolerance. [PDF]
Adv Sci (Weinh)We introduce a single‐layer, CMOS‐compatible metasurface that allows for polarization‐programmable, achromatic broadband dual‐mode imaging with high longitudinal tolerance. The twin‐lever design combines bright‐field focusing and vortex‐based edge‐enhanced imaging while managing axial intensity distribution from 488 to 633 nm.
Javed I +10 more
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Polarization quadrature measurement of subwavelength diffracting structures [PDF]
Applied Optics, 1997 The amplitude and the phase of the diffracted far field depends on polarization when the diffracting structure is comparable to or less than the wavelength. When the far-field amplitude and the phase of one polarization with respect to the orthogonal polarization is measured, small changes in the structure can be measured.
Marx, D. S., Psaltis, D.
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Multi-wavelength focusing based on nanoholes
New Journal of Physics, 2020 A kind of controllable multi-wavelength focusing metalenses is proposed. The proposed metalenses consist of identical nanometer holes etched in silver film and the beam focusing at three primary wavelengths is controlled without additional phase ...
Yuansheng Han +6 more
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Single-Sensor Vibration Sensing in Anisotropic Composites Enabled by Disordered Metasurfaces. [PDF]
Adv Sci (Weinh)This work develops a single‐sensor vibration sensing (SSVS) framework that integrates disordered metasurfaces with compressive sensing. Comprehensive numerical and experimental validations demonstrate that, by manipulating anisotropic guided wave propagation through metasurfaces, the proposed SSVS framework enables high‐fidelity multi‐source vibration ...
Zhang J +6 more
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Keeping Good Sensing Performance of Metal–Dielectric–Metal Waveguides After Coating Treatment
IEEE Photonics Journal, 2017 Good sensing performance is observed in metal–dielectric–metal (MDM) waveguides in recent research. However, Ag will be oxidized in air. The oxidization layer makes the sensing performance not as high as before.
Zhihui He +5 more
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Large-Angle Color Dispersion Based on 2-D Hexagonal Subwavelength Holographic Gratings
IEEE Photonics Journal, 2013 This paper presents large-angle color dispersion using a holographically fabricated 2-D subwavelength transmission grating. A dispersion angle of 68° is observed within continuous spectrum dispersion from 360 to 700 nm at an incident angle of 20 &#
Ya-Yun Lo +4 more
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Multifrequency Superscattering from Subwavelength Hyperbolic Structures [PDF]
ACS Photonics, 2018 5 ...
Chao Qian +10 more
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All-dielectric Mie-resonant metaphotonics
Comptes Rendus. Physique, 2020 All-dielectric subwavelength structures made of high-refractive-index materials combine a unique set of advantages in comparison with their plasmonic counterparts.
Bonod, Nicolas, Kivshar, Yuri
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