Journal ArticleDOI
Generation of nondiffracting Bessel beams by use of a spatial light modulator
TLDR
The characteristics of a singularity in a nondiffracting Bessel beam is explored experimentally by use of a programmable spatial light modulator with 64-level phase holograms and the diffraction efficiency is greatly improved.Abstract:
A laser beam with phase singularities is an interesting object to study in optics and may have important applications in guiding atoms and molecules. We explore the characteristics of a singularity in a nondiffracting Bessel beam experimentally by use of a programmable spatial light modulator with 64-level phase holograms. The diffraction efficiency with 64-level phase holograms is greatly improved in comparison with that obtained with a binary grating. The experiments show that the size and deflection angle of the beam can be controlled in real time. The observations are in agreement with scalar diffraction theory.read more
Citations
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Journal ArticleDOI
Single-molecule techniques in biophysics: a review of the progress in methods and applications.
TL;DR: In this paper, the authors discuss the motivation and requirements for these recent experiments, including the underpinning mathematics, and discuss exciting new directions for single-molecule biophysics.
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
Programmable focal spot shaping of amplified femtosecond laser pulses.
Nicolas Sanner,Nicolas Huot,Eric Audouard,Christian Larat,Jean-Pierre Huignard,Brigitte Loiseaux +5 more
TL;DR: This work describes the programmable spatial beam shaping of 100-kHz, 4-microJ amplified femtosecond pulses in a focal plane by wave-front modulation and obtains top-hat, doughnut, square, and triangle shapes of 20-microm size.
Journal ArticleDOI
Helico-conical optical beams: a product of helical and conical phase fronts.
TL;DR: Helico-conical optical beams, different from higher-order Bessel beams, are generated with a parallel-aligned nematic liquid crystal spatial light modulator by multiplying helical and conical phase functions leading to a nonseparable radial and azimuthal phase dependence.
Journal ArticleDOI
Transverse particle dynamics in a Bessel beam.
TL;DR: This paper elucidates through both theory and experiment the behavior of silica microspheres moving under the influence of the periodic optical field provided by a Bessel beam, and compares two different computational models based on Mie scattering and geometrical ray optics to find good qualitative agreement.
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
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
Realization of general nondiffracting beams with computer-generated holograms
TL;DR: This work shows by the method of stationary phase that any of these wave fields can be realized approximately with a laser and a single computer-generated hologram, and demonstrates experimentally the formation of arbitrary-order Bessel beams and rotationally nonsymmetric beams.
Book
Optics and Nonlinear Optics of Liquid Crystals
Iam-Choon Khoo,Shin-Tson Wu +1 more
TL;DR: Optical properties of liquid crystals electro-optical properties and nonlinear optical properties of nonlinear optics of liquid crystal nonlinear systems were studied in this paper, where liquid crystals were considered.
Journal ArticleDOI
Topological charge and angular momentum of light beams carrying optical vortices
Marat S. Soskin,Vyacheslav N. Gorshkov,Mikhail V. Vasnetsov,J. T. Malos,Norman R. Heckenberg +4 more
TL;DR: In this article, the properties of light beams carrying phase singularities, or optical vortices, were studied both in theory and experiment, and the general rule for angular-momentum density distribution in a combined beam was established.