Journal ArticleDOI
Explicit relations and optimal parameters for sidelobe suppression in optical vortices with a modified Bessel function.
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TLDR
This paper establishes explicit relations between the radial modulation and the optimal sidelobe expression effect in the Bessel-like modulation technique and verifies that both central and outer ring areas of the phase plate result in sidelobes in the diffraction pattern.Abstract:
This paper establishes explicit relations between the radial modulation and the optimal sidelobe expression effect in the Bessel-like modulation technique. It verifies that both central and outer ring areas of the phase plate result in sidelobes in the diffraction pattern, and the corresponding structural dimensions can be determined quantitatively. This approach gives rise to complete sidelobe suppression by taking optimal modulation parameters.read more
Citations
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Journal ArticleDOI
Generation of the "perfect" optical vortex using a liquid-crystal spatial light modulator
TL;DR: It is shown analytically and experimentally that such a vortex can be approximately generated in the Fourier transforming optical system with a computer-controlled liquid-crystal spatial light modulator.
Journal ArticleDOI
Simple technique for generating the perfect optical vortex
Joaquín García-García,Carolina Rickenstorff-Parrao,Ruben Ramos-Garcia,Victor Arrizón,Andrey S. Ostrovsky +4 more
TL;DR: An improved technique for generating the perfect optical vortex is proposed and is notable for the simplicity of its practical realization and high quality of the results.
Journal ArticleDOI
Image edge enhancement in optical microscopy with a Bessel-like amplitude modulated spiral phase filter
TL;DR: In this article, a Bessel-like amplitude modulated spiral phase filter was used in a real-time spatial image edge enhancement system in optical microscopy for biological sample imaging.
Journal ArticleDOI
Refining common path interferometry with a spiral phase Fourier filter
TL;DR: In this paper, a direct measurement of the amplitude of the reference beam, which can be done in the given setup by simply changing the image on the SLM, can increase the accuracy of phase measurement, allowing one to determine the refractive index with a relative error below 6%
Journal ArticleDOI
Generation of Perfect Optical Vortices by Using a Transmission Liquid Crystal Spatial Light Modulator
TL;DR: In this paper, the authors showed theoretically that the size of the annular vortex in the Fourier plane is independent of the spiral phase topological charge but it is dependent on the axicon.
References
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Journal ArticleDOI
Free-space information transfer using light beams carrying orbital angular momentum
Graham M. Gibson,Johannes Courtial,Miles J. Padgett,Mikhail V. Vasnetsov,V. A. Pas’ko,Stephen M. Barnett,Sonja Franke-Arnold +6 more
TL;DR: The transfer of information encoded as orbital angular momentum states of a light beam is demonstrated, which is resistant to eavesdropping and gives an experimental insight into the effects of aperturing and misalignment of the beam on the OAM measurement and demonstrates the uncertainty relationship for OAM.
Journal ArticleDOI
Generation of optical phase singularities by computer-generated holograms.
TL;DR: Laser beams that contain phase singularities can be generated with computer-generated holograms, which in the simplest case have the form of spiral Fresnel zone plates.
Journal ArticleDOI
Transverse laser patterns. I. Phase singularity crystals
Massimo Brambilla,F. Battipede,Luigi A. Lugiato,Vittorio Penna,Franco Prati,Chr. Tamm,C.O. Weiss +6 more
TL;DR: The interaction and the competition of a set of transverse cavity modes, which belong to a frequency-degenerate family, are analyzed and the predicted phase singularities in each pattern agree in detail with those found by theory.
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Image processing with the radial Hilbert transform: theory and experiments
TL;DR: A radially symmetric Hilbert transform is introduced that permits two-dimensional edge enhancement and is implemented with a programmable phase-only liquid-crystal spatial light modulator.
Journal ArticleDOI
Optically driven micromachine elements
TL;DR: In this article, an optically driven micromachine element is demonstrated, where optical angular momentum is transferred from a circularly polarized laser beam to a birefringent particle confined in an optical tweezers trap.