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On "Inconsistencies of metalens performance and comparison with conventional diffractive optics"
Amir Arbabi, Andrei Faraon
It was recently claimed1 that reported focusing efficiency values of high numerical aperture metalenses are inconsistent with a theoretical bound, and their measurement results are…
Visible metalenses with high focusing efficiency fabricated using nanoimprint lithography
Andrew McClung, Mahsa Torfeh, Vincent J. Einck +2
Metasurfaces enable precise control over the properties of light and hold promise for commercial applications. However, fabricating visible metasurfaces suitable for high-volume pr…
Free-space-coupled wavelength-scale disk resonators
Babak Mirzapourbeinekalaye, Sarath Samudrala, Mahdad Mansouree +2
Optical microresonators with low quality factor () can be efficiently excited by and scatter freely propagating optical waves, but those with high typically cannot. Here, we…
General lossless polarization and phase transformation using bilayer metasurfaces
Babak Mirzapourbeinekalaye, Andrew McClung, Amir Arbabi
Metasurface optical elements enable wavefront control and polarization manipulation with subwavelength resolution. Metasurfaces made of linearly birefringent meta-atoms such as rec…
Large-scale parameterized metasurface design using adjoint optimization
Mahdad Mansouree, Andrew McClung, Sarath Samudrala +1
Optical metasurfaces are planar arrangements of subwavelength meta-atoms that implement a wide range of transformations on incident light. The design of efficient metasurfaces requ…
Modeling metasurfaces using discrete-space impulse response technique
Mahsa Torfeh, Amir Arbabi
Metasurfaces are arrays of subwavelength meta-atoms that shape waves in a compact and planar form factor. Analysis and design of metasurfaces require methods for modeling their int…
Compact Folded Metasurface Spectrometer
MohammadSadegh Faraji-Dana, Ehsan Arbabi, Amir Arbabi +3
Recent advances in optical metasurfaces enable control of the wavefront, polarization and dispersion of optical waves beyond the capabilities of conventional diffractive optics. An…
A review of dielectric optical metasurfaces for wavefront control
Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi +1
During the past few years, metasurfaces have been used to demonstrate optical elements and systems with capabilities that surpass those of conventional diffractive optics. Here we…
Full Stokes imaging polarimetry using dielectric metasurfaces
Ehsan Arbabi, Seyedeh Mahsa Kamali, Amir Arbabi +1
Polarization is a degree of freedom of light carrying important information that is usually absent in intensity and spectral content. Imaging polarimetry is the process of determin…
MEMS-tunable dielectric metasurface lens
Ehsan Arbabi, Amir Arbabi, Seyedeh Mahsa Kamali +3
Varifocal lenses, conventionally implemented by changing the axial distance between multiple optical elements, have a wide range of applications in imaging and optical beam scannin…
Angle-multiplexed metasurfaces: encoding independent wavefronts in a single metasurface under different illumination angles
Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi +3
The angular response of thin diffractive optical elements is highly correlated. For example, the angles of incidence and diffraction of a grating are locked through the grating mom…
Complex wavefront engineering with disorder-engineered metasurfaces
Mooseok Jang, Yu Horie, Atsushi Shibukawa +7
Recently, complex wavefront engineering with disordered media has demonstrated optical manipulation capabilities beyond those of conventional optics. These capabilities include ext…
Controlling the sign of chromatic dispersion in diffractive optics with dielectric metasurfaces
Ehsan Arbabi, Amir Arbabi, Seyedeh Mahsa Kamali +2
Diffraction gratings disperse light in a rainbow of colors with the opposite order than refractive prisms, a phenomenon known as negative dispersion. While refractive dispersion ca…
Orbital Angular Momentum-based Space Division Multiplexing for High-capacity Underwater Optical Communications
Yongxiong Ren, Long Li, Zhe Wang +14
To increase system capacity of underwater optical communications, we employ the spatial domain to simultaneously transmit multiple orthogonal spatial beams, each carrying an indepe…
Highly tunable elastic dielectric metasurface lenses
Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi +2
Dielectric metasurfaces are two-dimensional structures composed of nano-scatterers that manipulate phase and polarization of optical waves with subwavelength spatial resolution, en…
Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures
Yu Horie, Amir Arbabi, Ehsan Arbabi +2
We propose and experimentally demonstrate a planar array of optical bandpass filters composed of low loss dielectric metasurface layers sandwiched between two distributed Bragg ref…
Miniature optical planar camera based on a wide-angle metasurface doublet corrected for monochromatic aberrations
Amir Arbabi, Ehsan Arbabi, Seyedeh Mahsa Kamali +3
Optical metasurfaces are two-dimensional arrays of nano-scatterers that modify optical wavefronts at subwavelength spatial resolution. They are poised to revolutionize optics by en…
Multiwavelength polarization insensitive lenses based on dielectric metasurfaces with meta-molecules
Ehsan Arbabi, Amir Arbabi, Seyedeh Mahsa Kamali +2
Metasurfaces are nano-structured devices composed of arrays of subwavelength scatterers (or meta-atoms) that manipulate the wavefront, polarization, or intensity of light. Like oth…
Efficient Dielectric Metasurface Collimating Lenses for Mid-Infrared Quantum Cascade Lasers
Amir Arbabi, Ryan M. Briggs, Yu Horie +2
Light emitted from single-mode semiconductor lasers generally has large divergence angles, and high numerical aperture lenses are required for beam collimation. Visible and near in…
Decoupling optical function and geometrical form using conformal flexible dielectric metasurfaces
Seyedeh Mahsa Kamali, Amir Arbabi, Ehsan Arbabi +2
Physical geometry and optical properties of objects are correlated: cylinders focus light to a line, spheres to a point, and arbitrarily shaped objects introduce optical aberration…
A Fundamental Limit on Propagation Loss of Waveguides with Subwavelength Mode Size
Amir Arbabi, Ehsan Arbabi, Safieddin Safavi-Naeini
A fundamental trade-off relation between the cross sectional confinement and propagation length of an arbitrary mode of a general waveguide is presented. This limit is a generaliza…
Fundamental Limits of Ultrathin Metasurfaces
Amir Arbabi, Andrei Faraon
We present universal theoretical limits on the operation and performance of non-magnetic passive ultrathin metasurfaces. In particular, we prove that their local transmission, refl…
Dielectric Metasurfaces for Complete Control of Phase and Polarization with Subwavelength Spatial Resolution and High Transmission
Amir Arbabi, Yu Horie, Mahmood Bagheri +1
Metasurfaces are planar structures that locally modify the polarization, phase, and amplitude of light in reflection or transmission, thus enabling lithographically patterned flat…
Subwavelength-thick Lenses with High Numerical Apertures and Large Efficiency Based on High Contrast Transmitarrays
Amir Arbabi, Yu Horie, Alexander J. Ball +2
We report subwavelength-thick, polarization insensitive micro-lenses operating at telecom wavelength with focal spots as small as 0.57 wavelengths and measured focusing efficiency…