Journal ArticleDOI
Tight parabolic dark spot with high numerical aperture focusing with a circular π phase plate
Nándor Bokor,Nir Davidson +1 more
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TLDR
In this article, the properties of tight dark focal spot created using a simple circular π phase plate are presented, and for focusing elements with low numerical aperture, the focal plane intensity has r 4 dependence.About:
This article is published in Optics Communications.The article was published on 2007-02-15. It has received 31 citations till now. The article focuses on the topics: Angular aperture & Numerical aperture.read more
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Journal ArticleDOI
A three dimensional dark focal spot uniformly surrounded by light
Nándor Bokor,Nir Davidson +1 more
TL;DR: In this paper, a new technique is proposed for generating a tight dark focal spot surrounded by uniform light intensity in all directions, based on a single focusing lens illuminated from one side, hence the alignment sensitivities associated with 4π methods are eliminated.
Journal ArticleDOI
Superoscillation: from physics to optical applications.
TL;DR: Recent developments in optical ‘superoscillation’ technologies are reviewed, which aim to overcome current limitations in superresolution techniques requiring contact with the observed object, the use of fluorescent labels, or viewing that is restricted to the near-field of a lens.
Journal ArticleDOI
Tuning donut profile for spatial resolution in stimulated emission depletion microscopy
TL;DR: This study investigates the transformation of the donut-shaped depletion beam focused by a high numerical aperture microscope objective, and model STED point spread function (PSF) as a function of donut beam profile, and derives the mathematical expression for continuous wave (CW) STED PSF as a functions of focal plane donut and excitation beam profiles, as well as dye properties.
Book ChapterDOI
Tight Focusing of Light Beams: Effect of Polarization, Phase, and Coherence
Ziyang Chen,Limin Hua,Jixiong Pu +2 more
TL;DR: In this article, a relatively recent development in the field of tight focusing, namely, the focusing of beams with a high numerical aperture objective, is reviewed, with particular attention paid to characteristics near focus formed by beams with phase, and polarization modulations.
Journal ArticleDOI
Creation of tunable multiple 3D dark spots with cylindrical vector beam
TL;DR: A method to generate multiple three-dimensional (3D) dark focal spots along the optical axis by focusing a cylindrical vector beam and the size of each 3D dark spot is almost the same, and the central light intensity of the dark spots is nearly zero while the light intensity surrounding around is almost uniform.
References
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Journal ArticleDOI
Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy
Stefan W. Hell,Jan Wichmann +1 more
TL;DR: A new type of scanning fluorescence microscope capable of resolving 35 nm in the far field is proposed, overcome the diffraction resolution limit by employing stimulated emission to inhibit the fluorescence process in the outer regions of the excitation point-spread function.
Journal Article
Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy
Stefan W. Hell,Jan Wichmann +1 more
TL;DR: In this paper, the authors proposed a new type of scanning fluorescence microscope capable of resolving 35 nm in the far field by employing stimulated emission to inhibit the fluorescence process in the outer regions of the excitation point spread function.
Journal ArticleDOI
Electromagnetic Diffraction in Optical Systems. II. Structure of the Image Field in an Aplanatic System
B. Richards,Emil Wolf +1 more
TL;DR: In this article, an investigation of the structure of the electromagnetic field near the focus of an aplanatic system which images a point source is made, and the results are illustrated by diagrams and in a tabulated form based on data obtained by extensive calculations on an electronic computor.
Journal ArticleDOI
Toward fluorescence nanoscopy
TL;DR: A family of concepts has emerged that overcomes the diffraction barrier altogether and, relying on saturated optical transitions, these concepts are limited only by the attainable saturation level.
Journal ArticleDOI
Novel Optical Trap of Atoms with a Doughnut Beam
TL;DR: In this article, a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition was used to trap neutral atoms in the dark core of the doughnut beam with the help of two additional laser beams.
Related Papers (5)
Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy
Stefan W. Hell,Jan Wichmann +1 more
Electromagnetic Diffraction in Optical Systems. II. Structure of the Image Field in an Aplanatic System
B. Richards,Emil Wolf +1 more