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Experimental demonstration of high compression of space by optical spaceplates
Ryan Hogan, Yaryna Mamchur, R. Margoth Cordova-Castro +5
The physical size of optical imaging systems is one of the greatest constraints on their use, limiting the performance and deployment of a range of systems from telescopes to mobil…
To What Extent Can Space Be Compressed? Bandwidth Limits of Spaceplates
Kunal Shastri, Orad Reshef, Robert W. Boyd +2
Spaceplates are novel flat-optic devices that implement the optical response of a free-space volume over a smaller length, effectively "compressing space" for light propagation. To…
Fourier-Engineered Plasmonic Lattice Resonances
Theng-Loo Lim, Yaswant Vaddi, M. Saad Bin-Alam +7
Resonances in optical systems are useful for many applications, such as frequency comb generation, optical filtering, and biosensing. However, many of these applications are diffic…
Cross-polarized surface lattice resonances in a rectangular lattice plasmonic metasurface
M. Saad Bin-Alam, Orad Reshef, Raja Naeem Ahmad +4
Multiresonant metasurfaces could enable many applications in filtering, sensing and nonlinear optics. However, developing a metasurface with more than one high-quality-factor or hi…
Designing high-performance propagation-compressing spaceplates using thin-film multilayer stacks
Jordan T. R. Page, Orad Reshef, Robert W. Boyd +1
The development of metasurfaces has enabled unprecedented portability and functionality in flat optical devices. Spaceplates have recently been introduced as a complementary elemen…
Relaxed phase-matching constraints in zero-index waveguides
Justin R. Gagnon, Orad Reshef, Daniel H. G. Espinosa +8
The nonlinear optical response of materials is the foundation upon which applications such as frequency conversion, all-optical signal processing, molecular spectroscopy, and nonli…
Enhanced Nonlinear Optical Responses of Layered Epsilon-Near-Zero Metamaterials at Visible Frequencies
Sisira Suresh, Orad Reshef, M. Zahirul Alam +3
Optical materials with vanishing dielectric permittivity, known as epsilon-near-zero (ENZ) materials, have been shown to possess enhanced nonlinear optical responses in their ENZ r…
On modifications of fundamental radiative processes in near-zero-index media of various dimensions
Lobet Michaël, Iñigo Liberal, Erik N. Knall +5
Spontaneous emission, stimulated emission and absorption are the three fundamental radiative processes describing light-matter interactions. Here, we theoretically study the behavi…
Ultra-high-Q resonances in plasmonic metasurfaces
M. Saad Bin-Alam, Orad Reshef, Yaryna Mamchur +8
Plasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength devices, reducing power operating thresholds and enabling nonlinear optical functionality in…
An optic to replace space and its application towards ultra-thin imaging systems
Orad Reshef, Michael P. DelMastro, Katherine K. M. Bearne +4
Centuries of effort to improve imaging has focused on perfecting and combining lenses to obtain better optical performance and new functionalities. The arrival of nanotechnology ha…
Multi-resonant high-Q plasmonic metasurfaces
Orad Reshef, Md Saad-Bin-Alam, Mikko J. Huttunen +5
Resonant metasurfaces are devices composed of nanostructured sub-wavelength scatterers that generate narrow optical resonances, enabling applications in filtering, nonlinear optics…
Beyond the perturbative description of the nonlinear optical response of low-index materials
Orad Reshef, Enno Giese, M. Zahirul Alam +3
We show that standard approximations in nonlinear optics are violated for situations involving a small value of the linear refractive index. Consequently, the conventional equation…
Extracting losses from asymmetric resonances in micro-ring resonators
Orad Reshef, Michael G. Moebius, Eric Mazur
Propagation losses in micro-ring resonator waveguides can be determined from the shape of individual resonances in their transmission spectrum. The losses are typically extracted b…
Monolithic CMOS-compatible zero-index metamaterials
Daryl I. Vulis, Yang Li, Orad Reshef +5
Zero-index materials exhibit exotic optical properties that can be utilized for integrated-optics applications. However, practical implementation requires compatibility with comple…
On-chip all-dielectric fabrication-tolerant zero-index metamaterials
Shota Kita, Yang Li, Philip Muñoz +5
Zero-index metamaterials (ZIMs) offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical cloaking, super-coupl…