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Radially and azimuthally polarized beams generated by space-variant dielectric subwavelength gratings.
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TLDR
A novel method for forming radially and azimuthally polarized beams by using computer-generated subwavelength dielectric gratings is presented and it is shown that such beams have certain vortexlike properties and that they carry angular momentum.Abstract:
We present a novel method for forming radially and azimuthally polarized beams by using computer-generated subwavelength dielectric gratings. The elements were deposited upon GaAs substrates and produced beams with a polarization purity of 99.2% at a wavelength of 10.6 µm. We have verified the polarization properties with full space-variant polarization analysis and measurement, and we show that such beams have certain vortexlike properties and that they carry angular momentum.read more
Citations
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Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging.
Mohammadreza Khorasaninejad,Wei Ting Chen,Robert C. Devlin,Jaewon Oh,Alexander Y. Zhu,Federico Capasso +5 more
TL;DR: The results firmly establish that metalenses can have widespread applications in laser-based microscopy, imaging, and spectroscopy, with image qualities comparable to a state-of-the-art commercial objective.
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Cylindrical vector beams: from mathematical concepts to applications
TL;DR: An overview of the recent developments in the field of cylindrical vector beams is provided in this paper, where the authors also discuss the potential of using these beams in other fields.
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Dielectric gradient metasurface optical elements.
TL;DR: The experimental realization and operation of dielectric gradient metasurface optical elements capable of also achieving high efficiencies in transmission mode in the visible spectrum are described.
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All-dielectric metamaterials
TL;DR: This Review presents a broad outline of the whole range of electromagnetic effects observed using all-dielectric metamaterials: high-refractive-index nanoresonators, metasurfaces, zero-index met amaterials and anisotropic metammaterials, and discusses current challenges and future goals for the field at the intersection with quantum, thermal and silicon photonics.
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Tailoring of arbitrary optical vector beams
TL;DR: In this article, a robust interferometric method was proposed to generate vector beam modes by diffracting a Gaussian laser beam from a spatial light modulator consisting of a high-resolution reflective nematic liquid crystal display.
References
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Generalized theory of interference, and its applications. Part I. Coherent pencils
TL;DR: In this paper, the superposition of two coherent beams in different states of elliptic polarisation is discussed in a general manner, and the extent of mutual interference varies from a maximum for identically polarised beams (c = 0) to zero for oppositely polarised ones (C = π ).
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Rigorous coupled-wave analysis of metallic surface-relief gratings
M. G. Moharam,Thomas K. Gaylord +1 more
TL;DR: In this paper, a rigorous coupled-wave analysis for metallic surface-relief gratings is presented for all diffracted orders as a function of period, groove depth, polarization, and angle of incidence.
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Linearly polarized light with axial symmetry generated by liquid-crystal polarization converters
M. Stalder,M Schadt +1 more
TL;DR: It is shown that one can in principle generate fields of any integral order P by cascading such elements and devices that generate P = 1 fields are achromatic and can be used as polarization axis finders or as versatile tools for studying birefringent or polarizing materials.
Journal ArticleDOI
Pancharatnam Berry phase in space-variant polarization-state manipulations with subwavelength gratings
TL;DR: The appearance of a geometrical phase in space-variant polarization-state manipulations related to the classic Pancharatnam-Berry phase is reported and a method with which to calculate it is calculated and its effect is experimentally demonstrated, using subwavelength metal stripe space-Variant gratings.
Journal ArticleDOI
The formation of laser beams with pure azimuthal or radial polarization
TL;DR: In this article, the coherent summation of two orthogonally polarized TEM01 modes inside the laser resonator was used to obtain pure azimuthal and radial polarized beams.