Results 321 to 330 of about 14,910,135 (394)
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Optics Letters, 2016
We report on the observation of a modulated pattern induced by a single laser beam in a polymeric film. In spite of the simple geometrical configuration, the analysis of the far field diffraction pattern allows a sensitive retrieving of the wavelength of the recording beam and of its incidence angle, pointing out the high information content of the ...
R Castagna +5 more
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We report on the observation of a modulated pattern induced by a single laser beam in a polymeric film. In spite of the simple geometrical configuration, the analysis of the far field diffraction pattern allows a sensitive retrieving of the wavelength of the recording beam and of its incidence angle, pointing out the high information content of the ...
R Castagna +5 more
openaire +3 more sources
IEEE Sensors Journal
Transverse vibration measurement of beam structures based on computer vision has been widely used, but most visual measurement methods require the installation of artificial markers at the measured positions.
Zongying Yu +5 more
semanticscholar +1 more source
Transverse vibration measurement of beam structures based on computer vision has been widely used, but most visual measurement methods require the installation of artificial markers at the measured positions.
Zongying Yu +5 more
semanticscholar +1 more source
Dynamic Response of a Beam Structure Excited by Sequentially Moving Rigid Bodies
, 2020A coupled dynamic system consisting of a supporting beam structure and multiple passing rigid bodies is seen in various engineering applications.
Hao Gao, Bingen Yang
semanticscholar +1 more source
Optical Design for Photonics, 1993
New systems are being developed around innovative diffractive optical components. Applications in optical interconnects, signal switching and interferometry have created a need for two-dimensional optical fanout gratings with unusual geometries. The increasingly complex gratings being designed for such optical fanout devices require specialized ...
A. D. Kathman +2 more
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New systems are being developed around innovative diffractive optical components. Applications in optical interconnects, signal switching and interferometry have created a need for two-dimensional optical fanout gratings with unusual geometries. The increasingly complex gratings being designed for such optical fanout devices require specialized ...
A. D. Kathman +2 more
openaire +1 more source
Structure related beam propagation
Optical and Quantum Electronics, 1999The general theory of a class of structure related (SR) non-orthogonal coordinate systems is introduced for the first time. Special cases of this type of coordinate system used separately or in combination can automatically follow the local geometry of many common optical waveguide designs, thereby facilitating the fast and accurate simulation of ...
T. M. Benson +3 more
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Annalen der Physik, 2023
AbstractThis paper presents a novel approach for generating structured light using a diffractive beam‐shaping element that can generate multiple beams with distinct spatial structures in the focal plane. The element is constructed by restructuring a spiral zone plate with fork gratings, providing a tunable and controllable means for generating ...
Haleh Ebrahimi, Arash Sabatyan
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AbstractThis paper presents a novel approach for generating structured light using a diffractive beam‐shaping element that can generate multiple beams with distinct spatial structures in the focal plane. The element is constructed by restructuring a spiral zone plate with fork gratings, providing a tunable and controllable means for generating ...
Haleh Ebrahimi, Arash Sabatyan
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Structurally Stable Hyperbolic Beam
Japanese Journal of Applied Physics, 2009A technique for generation of a structurally stable hyperbolic beam using Fourier transform holography is reported. Bessel function with their arguments having hyperbolic locus is used for generating a diffractive optical element (DOE). For the introduction of optical vortex a circular vortex term is used.
Rijuparna Chakraborty, Ajay Ghosh
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An actuation method by a biconcave beam structure with converse flexoelectric effect
Smart materials and structures (Print), 2019Converse flexoelectricity describes the linear relationship between an electric field gradient and the mechanical stress in dielectric materials. It is not restricted by the Curie temperature limit, does not require advanced electrical poling and a wide ...
Tonghui Wu +5 more
semanticscholar +1 more source
Crack diagnosis method for a cantilevered beam structure based on modal parameters
Measurement science and technology, 2019The beam structure is widely used in engineering structures and plays an important role in large mechanical structures. A crack is one of the main causes of the failure of the beam.
Qiqiang Wu +3 more
semanticscholar +1 more source
Bandwidth Increment of Piezoelectric Energy Harvester using Multi-beam Structure
2019 Devices for Integrated Circuit (DevIC), 2019Piezoelectric energy harvesters have high power density and are simpler to fabricate as compared to other low power energy harvesters. There are certain issues which need to be addressed while designing a piezoelectric energy harvester.
S. Naval +4 more
semanticscholar +1 more source