We demonstrate a novel laser-based wireless power delivery system that can charge mobile devices such as smartphones across room. The key challenges in achieving this are multi-fold: delivering greater than watt of the room, minimizing exposure resulting high-power lasers to human tissue, and finally ensuring design meets form-factor requirements smartphone requires minimal instrumentation environment. This paper presents novel, best our knowledge, first design, implementation evaluation an...

Metasurface optics is a promising candidate for realizing the next generation of miniaturized optical components. Unlike refractive optics, these devices modify light over wavelength-scale thickness, changing phase, amplitude, and polarization. This review details recent developments state-of-the-art metasurfaces realized using silicon nitride. We emphasize this material as to date it has lowest index with which have been experimentally demonstrated. The wide band gap nitride enables reduced...

Abstract We report an inverse-designed, high numerical aperture (∼0.44), extended depth of focus (EDOF) meta-optic, which exhibits a lens-like point spread function (PSF). The EDOF meta-optic maintains focusing efficiency comparable to that hyperboloid metalens throughout its focus. Exploiting the and computational post processing, we demonstrate broadband imaging across full visible spectrum using 1 mm, f/1 meta-optic. Unlike other canonical meta-optics, characterized by phase masks such as...

Sub-wavelength diffractive optics, commonly known as metasurfaces, have recently garnered significant attention for their ability to create ultra-thin flat lenses with extremely short focal lengths. Several materials different refractive indices been used metasurface (metalenses). In this paper, we analyze the role of material on performance these metalenses. We employ both forward and inverse design methodologies perform our analysis. found that, while high index allow extreme reduction...

Extended depth of focus (EDOF) lenses are important for various applications in computational imaging and microscopy. In addition to enabling novel functionalities, EDOF can alleviate the need stringent alignment requirements systems. Existing lenses, however, often inefficient or produce an asymmetric point spread function (PSF) that blurs images. Inverse design nanophotonics, including metasurfaces, has generated strong interest recent years owing its potential generating exotic innovative...

We have developed a terahertz time-domain polarimetry (THz-TDP) system by applying frequency modulation to electro-optic sampling detection in nonlinear crystal. characterized the precision of this determining polarization angles be 1.3

We design, fabricate and characterize a cylindrical metasurface lens operating at — 625nm with depth of focus exceeding that an ordinary using adjoint optimization-based inverse electromagnetic design.

The combination of photonic integrated circuits and free-space metaoptics has the ability to untie technological knots that require advanced light manipulation due their conjoined achieve strong light–matter interaction via wave-guiding over a long distance shape them large space-bandwidth product. Rapid prototyping such compound system requires component interchangeability. This represents functional challenge in terms fabrication alignment high-performance optical systems. Here, we report...

Abstract Meta‐optics have rapidly become a major research field within the optics and photonics community, strongly driven by seemingly limitless opportunities made possible controlling optical wavefronts through interaction with arrays of sub‐wavelength scatterers. As more modalities are explored, design strategies to achieve desired functionalities increasingly demanding, necessitating advanced techniques. Herein, inverse approach is utilized create set single‐layer meta‐optics that...

A compact near-eye visor (NEV) system that can guide light from a display to the eye could transform augmented reality (AR) technology. Unfortunately, existing implementations of such an NEV either suffer small field view or chromatic aberrations. See-through quality and bulkiness further make overall performance visors unsuitable for seamless user experience. Metasurfaces are emerging class nanophotonic elements dramatically reduce size optical while enhancing functionality. In this paper,...

We have designed and fabricated a terahertz full-polarimetry instrument, based on control of polarization in gas-plasma source, fast measurement direction chirality the field time-domain without using any external polarizers. will present details this new experimental technique including synchronization calibration apparatus against wire-grid polarizers, derivation Jones matrix representation propagation optics. The polarimetry (THz-TDP) system extends frequency range to full bandwidth...

We present experimental results from the application of our new terahertz full-polarimetry instrument, to measuring thickness ultra-thin films in a multi-layer coating system. While standard time-of-flight measurement is limited by bandwidth THz pulse minimum resolution film that can be resolved using time-domain system, polarimetry (THz-TDP) instrument extend this limit few micrometers. This unique ability measure (approximately λ/1000) due accuracy THz-TDP resolve polarization direction...

Meta-optics have rapidly become a major research field within the optics and photonics community, strongly driven by seemingly limitless opportunities made possible controlling optical wavefronts through interaction with arrays of sub-wavelength scatterers. As more modalities are explored, design strategies to achieve desired functionalities increasingly demanding, necessitating advanced techniques. Herein, inverse-design approach is utilized create set single-layer meta-optics that...

A millimeter-wave Gunn oscillator based on Whispering Gallery Mode (WGM) resonator is introduced and studied in details. We use full-wave numerical simulations to accurately model the coupling mechanisms interactions between various parts of proposed WGM-based oscillator. Moreover, we propose an equivalent circuit that can be used oscillation analysis through harmonic balance simulations.

Sub-wavelength diffractive optics, commonly known as metasurfaces, have recently garnered significant attention for their ability to create ultra-thin flat lenses with extremely short focal lengths. Several materials different refractive indices been used meta-lenses. In this paper, we analyze the role of material in performance a meta-lens. We employ both forward and inverse design methodologies perform our analysis. found that, while high index allow extreme reduction length, moderate...

Conventional imaging systems are usually composed of bulky glass optics, and while they work well for many applications, offer little functionality in applications where system size is a constraint. Optical metasurfaces provide thin light-weight alternative to conventional optical elements by manipulating light scattering via resonant nanostructures. The inherent diffractive nature metalenses induces severe chromatic aberrations when under broadband illumination, which limits their potential...

We propose to design the next generation of metasurface near-eye visors which will circumvent real-world distortions and provide a large field view, as needed for an immersive AR experience. © 2019 The Author(s)

Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text E. Bayati, S. Colburn, and A. Majumdar, "Metasurface Optics for Ultra-Compact Augmented Reality (AR) Visors," in Conference Lasers Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2019), paper FTh3M.4. Export BibTex Endnote (RIS) HTML Plain alert Save article

Using local and nonlocal optimization, we design fabricate a metasurface to mimic the color response focusing functions of human eye. Qualitative match between theory experiment have been measured.

The combination of photonic integrated circuits and free-space meta-optics has the ability to unclasp technological knots that require advanced light manipulation due their conjoined guide shape electromagnetic waves. need for large scale access component interchangeability is essential rapid prototyping optical systems. Such capability represents a functional challenge in terms fabrication alignment compound platform. Here, we report multi-functional interface demonstrates capabilities...

We present a design framework for metasurface that uses hybrid approximate solver Maxwell's equations, which separates the computation metasurface's nanoscale and macro-scale, thus makes large-diameter inverse tractable on laptop. further demonstrate experimental realizations of ultra-large-area metasurfaces designed using this framework: (1) lens with extended depth field millimeter diameter, (2) polychromatic lenses diameters up to 1 cm.