Journal ArticleDOI
Evanescent Bessel beams
Shlomo Ruschin,A. Leizer +1 more
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TLDR
In this paper, a physical method of generation is proposed in the form of propagation of an ordinary (nonevanescent) Bessel beam across an interface between two different dielectric media.Abstract:
Bessel beams of the evanescent kind are presented and analyzed. They rapidly decay with propagation but retain their original transversal shape. A physical method of generation is proposed in the form of propagation of an ordinary (nonevanescent) Bessel beam across an interface between two different dielectric media. Transmission and reflection coefficients are calculated for this type of beam. The analysis is vectorial and is fully consistent with Maxwell’s equations. Apodized beams of Gauss–Bessel and Circ–Bessel types are propagated by numerical simulation and are shown also to retain a narrow central lobe. Beams of these types have evident advantages in near-field applications, microscopy, and high-density data storage with subwavelength resolution.read more
Citations
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Journal ArticleDOI
Annular Pupils, Radial Polarization, and Superresolution
TL;DR: An annular pupil, which can be used to produce a Bessel beam, when combined with radially polarized illumination promises improvements in microscope resolution, increased packing density for optical storage, and finer optical lithography.
Journal ArticleDOI
Evanescent Bessel beam generation via surface plasmon resonance excitation by a radially polarized beam
TL;DR: A simple setup for generating evanescent Bessel beams is proposed, where the entire beam is p-polarized with respect to the dielectric-metal interface, enabling excitation of surface plasmons from all directions.
Book ChapterDOI
Propagation-Invariant Optical Fields
TL;DR: In this paper, Turunen and Friberg dealt with a class of fields with propagation-invariant properties such as the optical intensity distribution and applied them to scalar and electromagnetic approaches.
Journal ArticleDOI
Smallest focal spots
Thierry Grosjean,D. Courjon +1 more
TL;DR: In this paper, it is shown that radial polarization leads to the best light beam focalisation in terms of spot size, whereas circular polarization induces best light confinements in air, whereas for numerical apertures beyond 8, radial polarization seems the right solution.
Journal ArticleDOI
Study of surface plasmon chirality induced by Archimedes' spiral grooves.
Tomoki Ohno,Shintaro Miyanishi +1 more
TL;DR: It is found that the surface of a plasmon has selective chirality, which is given by the sum of the chiralities of the incident light and the spiral structure, which could be widely applied for chiral detection of the event light and chiral excitation of several optical modes in nanophotonics.
References
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Journal ArticleDOI
Exact solutions for nondiffracting beams. I. The scalar theory
TL;DR: In this paper, exact nonsingular solutions of the scalar-wave equation for beams that are non-diffracting were presented, which means that the intensity pattern in a transverse plane is unaltered by propagating in free space.
Journal ArticleDOI
Bessel-Gauss beams
TL;DR: In this paper, a new type of solution of the paraxial wave equation is presented, which encompasses as limiting cases both the diffraction-free beam and the gaussian beam.
Journal ArticleDOI
Development of a 500 Å spatial resolution light microscope: I. light is efficiently transmitted through λ/16 diameter apertures
TL;DR: In this paper, the authors describe the possibility of constructing a scanning optical microscope based on near field imaging which could potentially have spatial resolutions as small as one-tenth the wavelength of the incident light.
Journal ArticleDOI
Solid immersion microscope
S. M. Mansfield,Gordon S. Kino +1 more
TL;DR: In this article, a real-time optical microscope was developed that operates on the same principle as a liquid immersion microscope, with the liquid replaced by a solid lens of high refractive index material.
Journal ArticleDOI
Scanning near-field optical microscopy
TL;DR: In this paper, the authors describe the technique and review recent progress in the field of near-field optical microscopy (SNOM) and present a review of the state-of-the-art.