Journal ArticleDOI
Generation of nondiffracting beams by diffractive phase elements
Reads0
Chats0
TLDR
In this article, the diffractive phase elements (DPE) were designed to produce non-iffracting beams according to the beam-shaping scheme, in which the incident Gaussian-profile beam is converted into a Bessel-function J0 beam.Abstract:
We present a design of the diffractive phase elements (DPE’s) that produce nondiffracting beams according to the beam-shaping scheme, in which the incident Gaussian-profile beam is converted into a Bessel-function J0 beam. An optimization method is applied to solving this special beam-shaping problem. Numerical investigation of the generating J0 Bessel beam shows that the designed DPE can satisfactorily produce the J0 Bessel beam.read more
Citations
More filters
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
Achromatic hybrid refractive-diffractive lens with extended depth of focus
TL;DR: Experimental results confirm the effectiveness of the proposed method through demonstration of an achromatic hybrid lens with better than a factor-of-7 improvement in depth of focus and 1-microm transverse resolution.
Journal ArticleDOI
Multiscale Bessel beams generated by a tunable acoustic gradient index of refraction lens.
TL;DR: The acoustic and optical theory behind the TAG lens is outlined, the experimental beam itself is presented, the major and minor rings are explained, and the TAG beam is compared with both axicon-generated and conventionally focused Gaussian beams.
Journal ArticleDOI
Unveiling the correlation between non-diffracting tractor beam and its singularity in Poynting vector
Dongliang Gao,Dongliang Gao,Andrey Novitsky,Tianhang Zhang,Fook Chiong Cheong,Lei Gao,Chwee Teck Lim,Boris Luk'yanchuk,Cheng-Wei Qiu +8 more
TL;DR: In this article, the authors investigated the singular optics of non-paraxial light beams in the near field when the light behaves as a tractor beam and provided a clear physical interpretation of the light-matter interaction and mani- fest the significance of singular optics in manipulating objects.
Journal ArticleDOI
Bessel-Gauss resonator with spherical output mirror: geometrical- and wave-optics analysis.
TL;DR: A detailed study of the axicon-based Bessel-Gauss resonator with concave output coupler is presented, using a technique to convert the Huygens-Fresnel integral self-consistency equation into a matrix equation and then finding the eigenvalues and the Eigenfields of the resonator at one time.
References
More filters
Journal ArticleDOI
Diffraction-free beams.
TL;DR: The first experimental investigation of nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space, is reported.
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
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.
Journal ArticleDOI
Production and uses of diffractionless beams
R. M. Herman,T. A. Wiggins +1 more
TL;DR: In this article, the authors proposed to obtain intense optical fields, whose form shows little change in size over long paths, through the use of either conical lenses or spherical lenses showing spherical aberration together with a single projecting lens.