Journal ArticleDOI
Optimal focusing of a beam in a ring vortex
TLDR
In this article, a simple optical setup that achieves this kind of focusing employing a phase plate as unique optical component is presented, where the annular focal field is modulated by an azimuthal phase of integer order q that converts the field in a ring vortex.About:
This article is published in Optics Communications.The article was published on 2015-12-01. It has received 4 citations till now. The article focuses on the topics: Optical vortex & Vortex.read more
Citations
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Journal ArticleDOI
Optical manipulation using optimal annular vortices.
TL;DR: A simple method to generate a configurable annular vortex beam (AVB) with the maximum possible peak intensity, employing a phase hologram whose transmittance is the phase of a Bessel beam.
Patent
Design method of annular vortex array mask plate with controllable vortex number
TL;DR: In this paper, a design method of an annular vortex array mask plate with controllable vortex number was proposed, which can achieve arbitrary control of the dark nuclear number of the ring, thus having very important application prospects in particle manipulation technology.
Single exposure general vortex phase-shift mask for contact hole
TL;DR: In this article, the authors used a DRAM contact-hole layout as an example to demonstrate that the same phase shift mask design technology for vortex mask can be applied to double line-space phase-shift mask method.
Proceedings ArticleDOI
Generation of optimal annular vortex beams for orbital angular momentum transfer to microparticles
TL;DR: In this paper, an optical vortex element (OVE) was used to generate an annular vortex beam (AVB) at a determined distance without the use of external optical elements such as lenses and axicons.
References
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Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Journal ArticleDOI
Entanglement of the orbital angular momentum states of photons
TL;DR: This work demonstrates entanglement involving the spatial modes of the electromagnetic field carrying orbital angular momentum, which provides a practical route to entangled states that involves many orthogonal quantum states, rather than just two Multi-dimensional entangled states could be of considerable importance in the field of quantum information, enabling, for example, more efficient use of communication channels in quantum cryptography.
Journal ArticleDOI
Entanglement of Orbital Angular Momentum States of Photons
TL;DR: In this article, the orbital angular momentum of photons is exploited to achieve multi-dimensional entanglement in higher dimensions, i.e., the state of the electromagnetic field with phase singularities (doughnut modes).
Journal ArticleDOI
Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase Singularity
TL;DR: Black or reflective particles can be trapped in the dark central minimum of a doughnut laser beam produced using a high efficiency computer generated hologram to carry angular momentum transferred from the central phase singularity beam.
Journal ArticleDOI
Nanoscale resolution in the focal plane of an optical microscope
Volker Westphal,Stefan W. Hell +1 more
TL;DR: It is demonstrated that en route to the molecular scale, the resolving power increases with the square root of the saturation level, which constitutes a new law regarding the resolution of an emerging class of far-field light microscopes that are not limited by diffraction.
Related Papers (5)
Radial phase modulated spiral zone plate for generation and manipulation of optical perfect vortex
Arash Sabatyan,Z. Behjat +1 more