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Acousto-optic image processing
Applied Optics, 2008Acousto-optic processing of images is based on the angular selectivity of acousto-optic interaction resulting in spatial filtration of the image spectrum. We present recent theoretical and experimental investigations carried out in this field. Much attention is given to the analysis of the acousto-optic cell transfer function form depending on the ...
Vladimir I, Balakshy, Dmitry E, Kostyuk
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Optics News, 1989
An acousto-optic architecture is presented to implement a nonblocking space-division switch with O(N) complexity. Signal degradation is minimal so that the switch is suitable for nonregenerative application within optical networks; it is also capable of rapid reconfiguration. Experiments for a 1 x 4 switch show an insertion loss ranging from 4.6 to 5.6
D O, Harris, A, Vanderlugt
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An acousto-optic architecture is presented to implement a nonblocking space-division switch with O(N) complexity. Signal degradation is minimal so that the switch is suitable for nonregenerative application within optical networks; it is also capable of rapid reconfiguration. Experiments for a 1 x 4 switch show an insertion loss ranging from 4.6 to 5.6
D O, Harris, A, Vanderlugt
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The Journal of the Acoustical Society of America, 2012
There is a great variety of beamforming techniques that can be used for localization of sound sources. The differences among them usually lie in the array layout or in the specific signal processing algorithm used to compute the beamforming output.
Antoni, Torras-Rosell +2 more
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There is a great variety of beamforming techniques that can be used for localization of sound sources. The differences among them usually lie in the array layout or in the specific signal processing algorithm used to compute the beamforming output.
Antoni, Torras-Rosell +2 more
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Acousto-optics and acousto-optical components
2020L’acousto-optique exploite le phénomène de diffraction de la lumière par les ondes acoustiques. Les composants acousto-optiques sont généralement construits autour d’un milieu solide transparent qui supporte la propagation d’ondes élastiques pour des fréquences de quelques dizaines de mégahertz à quelques gigahertz.
Kastelik, Jean-Claude, Laude, Vincent
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Nonreciprocity of acousto-optic interaction in collinear tunable acousto-optic filters
Applied Optics, 2008The investigation of a nonreciprocal effect for the example of collinear acousto-optic interaction is presented. It is shown that this effect influences the parameters of diffraction and the operation of modern acousto-optic devices, particularly acousto-optic tunable filters (AOTFs), at the frequencies of ultrasound of about 1 GHz and higher.
Yury S, Dobrolenskiy +3 more
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Acousto-optic interaction in Raman–Nath acousto-optic diffraction
The European Physical Journal D, 2019In this article, acousto-optic interaction in Raman–Nath acousto-optic diffraction has been discussed. By studying the relations between the power of the diffracted light and its origin in the ultrasonic field, we found that the phase of the diffracted light is modulated temporally and spatially by the ultrasonic wave.
Weng Cuncheng, He Youwu
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2018 IEEE Micro Electro Mechanical Systems (MEMS), 2018
An Acousto-Optic Gyroscope (AOG) consisting of a Mach-Zehnder interferometer (MZI) embedded into two inherently matched piezoelectric SAW resonators sharing the same cavity is presented. This constitutes the first demonstration of a MEMS strain-based optomechanical gyroscope that uses refractive index change due to the acousto-optic effect rather than ...
Ashraf Mahmoud +6 more
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An Acousto-Optic Gyroscope (AOG) consisting of a Mach-Zehnder interferometer (MZI) embedded into two inherently matched piezoelectric SAW resonators sharing the same cavity is presented. This constitutes the first demonstration of a MEMS strain-based optomechanical gyroscope that uses refractive index change due to the acousto-optic effect rather than ...
Ashraf Mahmoud +6 more
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The Journal of the Acoustical Society of America, 2003
An acousto-optic device comprises a first light source for producing a light beam, a light-transmitting material capable of transmitting the light beam along an optical path through the light-transmitting material, a light-absorbing material adjacent to the light-transmitting material, and a pulsed light source capable of directing a pulsed light beam ...
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An acousto-optic device comprises a first light source for producing a light beam, a light-transmitting material capable of transmitting the light beam along an optical path through the light-transmitting material, a light-absorbing material adjacent to the light-transmitting material, and a pulsed light source capable of directing a pulsed light beam ...
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Optical Society of America Annual Meeting, 1990
We describe an acousto-optical spectrometer consisting of a Bragg cell made of singlecrystal quartz. Spectral range of 420-780 nm and resolution of 0.2 nm is achieved. Applications in the monitoring of plasma-assisted material treatment are described.
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We describe an acousto-optical spectrometer consisting of a Bragg cell made of singlecrystal quartz. Spectral range of 420-780 nm and resolution of 0.2 nm is achieved. Applications in the monitoring of plasma-assisted material treatment are described.
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