Journal ArticleDOI
Generation of a high-quality partially coherent dark hollow beam with a multimode fiber
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TLDR
The experimental generation of a high-quality partially coherent dark hollow beam (DHB) is reported by coupling a partially coherent beam into a multimode fiber (MMF) with a suitable incidence angle by closely controlled coherence of the input beam.Abstract:
We report the experimental generation of a high-quality partially coherent dark hollow beam (DHB) by coupling a partially coherent beam into a multimode fiber (MMF) with a suitable incidence angle. The interference experiment of the generated partially coherent DHB passing through double slits is demonstrated. It is found that the coupling efficiency of the MMF, the quality, and the coherence of the generated partially coherent DHB are closely controlled by the coherence of the input beam.read more
Citations
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Journal ArticleDOI
Bessel and annular beams for materials processing
TL;DR: In this paper, proper-ties, generation methods and emerging applications for non-Gaussian beam shapes are discussed, including Bessel, an-nular, and vortex beams.
Journal ArticleDOI
Generation and propagation of partially coherent beams with nonconventional correlation functions: a review [invited].
TL;DR: A review of recent developments on generation and propagation of partially coherent beams with nonconventional correlation functions is presented.
Journal ArticleDOI
M2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere.
TL;DR: The numerical results show that the M(2)- factor of a DHB in turbulent atmosphere increases on propagation, which is much different from its invariant properties in free-space, and is mainly determined by the parameters of the beam and the atmosphere.
Journal ArticleDOI
Propagation of Partially Coherent Beam in Turbulent Atmosphere: a Review (Invited Review)
TL;DR: In this paper, the basic theory for treating the propagation of optical beams in turbulent atmosphere is described, and recent theoretical and experimental developments on propagation of a partially coherent beam in turbulent environment are reviewed.
Book ChapterDOI
Generation of Partially Coherent Beams
TL;DR: Partially coherent beams with a prescribed phase, state of polarization, and degree of coherence display many extraordinary propagation properties and are preferred in many applications, such as particle trapping, free-space optical communications, remote sensing, optical imaging, material thermal processing, image transformation, and optical encryption as discussed by the authors.
References
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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.
Journal ArticleDOI
Random Phasing of High-Power Lasers for Uniform Target Acceleration and Plasma-Instability Suppression
Yoshiaki Kato,Kunioki Mima,Noriaki Miyanaga,S. Arinaga,Yoneyoshi Kitagawa,Masahiro Nakatsuka,Chihiro Yamanaka +6 more
TL;DR: In this article, Planar as well as spherical targets were irradiated for the first time by the random-phased wave and the targets were uniformly accelerated without being affected by small-scale intensity nonuniformities.
Journal ArticleDOI
Atmospheric turbulence effects on a partially coherent Gaussian beam: implications for free-space laser communication.
TL;DR: In this article, a quasi-monochromatic Gaussian laser beam propagating in atmospheric turbulence is examined by using a derived analytic expression for the cross-spectral density function.
Journal ArticleDOI
Hollow Gaussian beams and their propagation properties.
TL;DR: The HGBs provide a convenient and powerful way to describe and treat the propagation of DHBs and can be used conveniently to analyze atoms manipulated with a DHB.
Journal ArticleDOI
Ghost imaging with incoherent and partially coherent light radiation.
TL;DR: The quality and visibility of the ghost image are influenced by the source's transverse size, coherence width, and object characteristics, and the equation depends on both paths.