Journal ArticleDOI
High-efficiency production of propagation-invariant spot arrays
TLDR
High-efficiency realization of finite-aperture approximations of the constructed fields is demonstrated in a system consisting of two multilevel diffractive elements, including a diffractive toroidal lens, which focuses the incident field into a ring pattern.Abstract:
Tailoring of the transverse intensity profiles of propagation-invariant optical fields is considered. The design of diffractive elements capable of realizing such fields by Fourier synthesis is discussed. High-efficiency realization of finite-aperture approximations of the constructed fields is demonstrated in a system consisting of two multilevel diffractive elements. The first element is a diffractive toroidal lens, which focuses the incident field into a ring pattern. The second diffractive element, located at the focal plane of the first element, introduces the phase modulation necessary to realize the desired transverse intensity profile behind a separate collimating lens. The influence of the fabrication errors of the diffractive elements on the fidelity of the propagation-invariant spot array is simulated, and system-integration aspects based on substrate-mode planar-integrated optics are considered.read more
Citations
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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
Controlling the evolution of nondiffracting speckle by complex amplitude modulation on a phase-only spatial light modulator
Angela Dudley,Angela Dudley,R Vasilyeu,Vladimir Belyi,Nikolai A. Khilo,Piotr Ropot,Andrew Forbes,Andrew Forbes +7 more
TL;DR: In this article, the structure of the nondiffracting speckle due to binary and continuous phase modulations for both a uniform and a normal distribution is investigated, and it is shown that the non-constructing field will appear as a structured zero-order Bessel beam by adjusting the standard deviation in the distribution.
Proceedings ArticleDOI
Vortex structure of elongated speckles
TL;DR: In this article, a novel type of quasi-nondiffracting (elongated) speckle fields having the vortex structure of individual speckles is investigated, and a physical mechanism of forming the elongated vortex fields is established.
Thin-film deposition using laser ablation : application to ferromagnetic shape-memory materials and methods for spatial shaping of laser beams
TL;DR: In this article, a simple and efficient method to convert a Gaussian laser beam into a Bessel-like beam with a long and narrow focal line by using a nematic liquid crystal with a high third-order nonlinearity was presented.
Journal ArticleDOI
High-efficiency multiple imaging in three-dimensional space
TL;DR: In this article, a technique of the high-efficiency formation of identical multiple images of a monochromatic object within 3D space is proposed and investigated, where the central points of these images are located in the points of a regular three-dimensional free-space lattice.
References
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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
Lens-System Diffraction Integral Written in Terms of Matrix Optics
TL;DR: In this paper, a diffraction integral is derived which relates the electromagnetic fields on the input plane of a lens system to those on its output plane, which indicates a connection between ray optics and diffraction theory.
Journal ArticleDOI
The Axicon: A New Type of Optical Element
TL;DR: The axicon autocollimator as discussed by the authors is a projector which projects a straight line of images into space, and it can be used to determine the perpendicularity of a mirror.