Nondiffracting and nondispersive vector shovel pulsed beams
نویسندگان
چکیده
منابع مشابه
Generating and measuring nondiffracting vector Bessel beams.
Nondiffracting vector Bessel beams are of considerable interest due to their nondiffracting nature and unique high-numerical-aperture focusing properties. Here we demonstrate their creation by a simple procedure requiring only a spatial light modulator and an azimuthally varying birefringent plate, known as a q-plate. We extend our control of both the geometric and dynamic phases to perform a p...
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An increasing attention has been concentrated on nondiffracting Bessel beams, due to their novel properties and prospective applications. In order to study their properties entirely, including the transverse modes, the polarization states and the flow of energy, vector analyses are necessary. In this paper, based on auxiliary functions of Hertzian vector potential, nondiffracting Bessel beams a...
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We demonstrate that nondiffracting beams can be generated with an arbitrary transverse shape. In particular, we show that the azimuthal complex modulation of the angular spectra of Helmholtz-Gauss wave fields constitutes a degree of freedom sufficient to tailor nondiffracting beams with an intensity pattern of choice.
متن کاملQuantum interference of nondiffracting beams
We report a quantum interference of nondiffracting beams by using photon pairs generated by spontaneous parametric down-conversion. The photon pairs transmitted by two double annular aperture produce fourth-order interference pattern along the transverse plane of detection as well as along the propagation distance. The latter presents a typical behaviour of the so-called Talbot effect . Introdu...
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Nondiffracting beams are useful for alignment applications because the size of the beam does not change as the beam propagates. In this research we report a technique that allows for distance measurements with nondiffracting beams. With our approach a diffractive optical element is designed that generates two off-axis, tilted, nondiffracting Bessel function beams. These beams intersect at a des...
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ژورنال
عنوان ژورنال: Procedia CIRP
سال: 2018
ISSN: 2212-8271
DOI: 10.1016/j.procir.2018.08.039