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Mitchell, Arnan
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Publications (14/14 displayed)
- 2021Fringe analysis approach for imaging surface undulations on technical surfacescitations
- 2020Optical frequency comb generation using low stress CMOS compatible reactive sputtered silicon nitride waveguidescitations
- 2020Optical frequency comb generation using low stress reactive sputtered silicon nitride waveguides
- 2019CMOS-compatible, plasma beam assisted reactive magnetron sputtered silicon nitride films for photonic integrated circuits
- 2019Post processing dispersion trimming for on-chip mid-infrared supercontinuum generation
- 2019Low stress, anomalous dispersive silicon nitride waveguides fabricated by reactive sputtering
- 2019Low loss CMOS-compatible silicon nitride photonics utilizing reactive sputtered thin filmscitations
- 2017Liquid metal enabled microfluidicscitations
- 2017Compact Brillouin devices through hybrid integration on siliconcitations
- 2015Creation of Liquid Metal 3D Microstructures Using Dielectrophoresiscitations
- 2014Spectral and angular characteristics of dielectric resonator metasurface at optical frequenciescitations
- 2013Liquid metal marblescitations
- 2013Liquid metal marblescitations
- 2013Electrochemically induced actuation of liquid metal marblescitations
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article
Spectral and angular characteristics of dielectric resonator metasurface at optical frequencies
Abstract
The capability of manipulating light at subwavelength scale has fostered the applications of flat metasurfaces in various fields. Compared to metallic structure, metasurfaces made of high permittivity low-loss dielectric resonators hold the promise of high efficiency by avoiding high conductive losses of metals at optical frequencies. This letter investigates the spectral and angular characteristics of a dielectric resonator metasurface composed of periodic sub-arrays of resonators with a linearly varying phase response. The far-field response of the metasurface can be decomposed into the response of a single grating element (sub-array) and the grating arrangement response. The analysis also reveals that coupling between resonators has a non-negligible impact on the angular response. Over a wide wavelength range, the simulated and measured angular characteristics of the metasurface provide a definite illustration of how different grating diffraction orders can be selectively suppressed or enhanced through antenna sub-array design.