Near-infrared demonstration of computer-generated holograms implemented by using subwavelength gratings with space-variant orientation

Levy, Uriel; Kim, Hyo-Chang; Tsai, Chien‐Hsiung; Fainman, Yeshaiahu

doi:10.1364/ol.30.002089

Cited by 59 publications

(51 citation statements)

References 18 publications

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“…In the resonance domain and for periods that are not much larger than the wavelength of the incident illumination, the optical responses of all these gratings may largely differ from one to another. However, from the vector theory calculations reported in [15,34] for area-coded and blazed-binary gratings, similar optical responses with only few percent differences into the first diffracted order may be anticipated for zone widths as small as 10. It is therefore anticipated that even in the resonance domain, area-coded gratings, like blazedbinary gratings with subwavelength ridges, may suffer from form-birefringence effects that prevent the realization of efficient blazes for unpolarized applications [11,22].…”

Section: B Optical Analysis Of One-dimensional Blazed-binary and Arementioning

confidence: 73%

“…In classical designs relying on continuous échelette-type profiles or staircase multilevel binary profiles, the local geometry consists of a thin layer with a given thickness. However, it can be also more complex patterns either in metallic or dielectric material, like subwavelength grooves [21], ridges [22,23], holes [24], micropillars [10], or pie slices [15], as illustrated in Figs. 1(b) and 1(c).…”

Section: Hybrid Modelmentioning

confidence: 99%

“…Similarly, W TM,i denotes the corresponding TM-polarized (electric field vector parallel to the plane of incidence) plane wave. The transmitted wave field W t can also be written as a superposition of two linearly-polarized plane waves, W t = W TE,t + W TM,t , where and are two given complex [20], blazed-binary element, and blazed area-coded effective-medium structure [15]. (c) Corresponding local geometries g. Scattering of a DOE with a slowly varying unwrapped phase function.…”

Section: Hybrid Modelmentioning

confidence: 99%

“…The efficiency of the scalar-domain limit may be broken [10][11][12]. Recent examples of components relying on the artificial-medium analogy can be found in [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of blazed diffractive optical elements formed with artificial dielectrics

et al. 2007

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A new hybrid method for the analysis of diffractive optical elements, which combines fully vectorial and scalar theories, is presented. It is suitable for use with elements of arbitrary large zone, even when the local feature size is of the order of the wavelength. To assess its applicability, we have performed cross-checking tests. The model is shown to accurately predict many optical properties of diffractive optical elements based on twodimensional artificial dielectrics, like the useful energy diffracted into the order of interest or the deterministic loss into high diffraction orders for an illumination with a wavelength different from the design wavelength or for highly oblique incidence.

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Section: B Optical Analysis Of One-dimensional Blazed-binary and Arementioning

confidence: 73%

Section: Hybrid Modelmentioning

confidence: 99%

Section: Hybrid Modelmentioning

confidence: 99%

“…The efficiency of the scalar-domain limit may be broken [10][11][12]. Recent examples of components relying on the artificial-medium analogy can be found in [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of blazed diffractive optical elements formed with artificial dielectrics

et al. 2007

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“…Initially proposed for metallic gratings [20] it was quickly adapted to dielectric materials [80], resulting in e.g. demonstration of metasurface-based holography [103]. In recent studies a similar approach was applied to realize silicon gratings, lenses and axicons with only 100 nm thickness on quartz substrate [28].…”

Section: Metasurfaces Based On Resonant Dielectric Elementsmentioning

confidence: 99%

Traditional and emerging materials for optical metasurfaces

et al. 2017

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Abstract:One of the most promising and vibrant research areas in nanotechnology has been the field of metasurfaces. These are two dimensional representations of metaatoms, or artificial interfaces designed to possess specialized electromagnetic properties which do not occur in nature, for specific applications. In this article, we present a brief review of metasurfaces from a materials perspective, and examine how the choice of different materials impact functionalities ranging from operating bandwidth to efficiencies. We place particular emphasis on emerging and non-traditional materials for metasurfaces such as high index dielectrics, topological insulators and digital metamaterials, and the potentially transformative role they could play in shaping further advances in the field. General Introduction to optical metasurfacesUnexpected and unusual effects have been recently reported in various fields of research, such as but not limited to acoustics, seismology, thermal physics, and electromagnetism. At the heart of these developments is a progres- sive understanding of the wave-matter interaction and our ability to artificially manipulate it, particularly at small length scales. This has in turn been largely driven by the discovery and engineering of materials at extreme limit. These "metamaterials" possess exotic properties that go beyond conventional or naturally occurring materials. Encompassing many new research directions, the field of metamaterials is rapidly expanding, and therefore, writing a complete review on this subject is a formidable task; here instead, we present a comprehensive review in which we discuss the progress and the emerging materials for metasurfaces, i.e. artificially designed ultrathin two dimensional optical metamaterials with customizable functionalities to produce designer outputs. Metasurfaces are often considered as the two dimensional versions of 3D metamaterials. The former, also known as frequency selective surfaces, or reflectand transmit-arrays in the microwave community [1-6], which has been recently shown to produce a variety of spectacular optical effects ranging from negative refraction [7], super/hyper-lensing [8][9][10], optical mirages to cloaking [11][12][13][14][15][16][17][18][19], are comprised of artificial materials engineered at the subwavelength scale to guide light along any arbitrary direction. The functionalities of individual optical components, which were previously essentially determined by the optical properties of materials, can now be specified at will. Effective material optical parameters can be rigorously derived via homogenization techniques by averaging the electromagnetic fields over a subwavelength volume encompassing each individual element of the periodic ensemble of resonant inclusions, with arbitrary geometry [12,[15][16][17][18][19]. Thus although metamaterials can be tailored for exotic optical functions, the basic mechanism responsible for shaping the optical wavefronts remains the same as that in conventional refractive optics: it is b...

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Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

357

199

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Metasurfaces, two‐dimensional versions of metamaterials, retain the great capabilities of three‐dimensional counterparts in manipulating electromagnetic wave behaviors, while reducing the challenges in fabrication. By judiciously engineering parameters of individual building blocks (such as geometry, size, and material) and selecting specific design algorithms, metasurfaces are promising to replace conventional electromagnetic elements in nanoplasmonic/photonic devices. Significantly, such concept can be readily promoted to other disciplines, such as acoustics, thermal physics, and seismology. In this article, the latest advances in full control of electromagnetic waves with metasurfaces are briefly reviewed from a functionality perspective. A broad avenue towards real‐life applications of metamaterials has been opened up, although they are still at their infant stage. At the end, several promising approaches are suggested to extend the applications of metasurfaces.

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Near-infrared demonstration of computer-generated holograms implemented by using subwavelength gratings with space-variant orientation

Cited by 59 publications

References 18 publications

Analysis of blazed diffractive optical elements formed with artificial dielectrics

Analysis of blazed diffractive optical elements formed with artificial dielectrics

Traditional and emerging materials for optical metasurfaces

Advances in Full Control of Electromagnetic Waves with Metasurfaces

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