Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing
This paper presents the results of theoretical and experimental studies of anisotropic acousto-optic interaction in a spatially periodical acoustic field created by a phased-array transducer with antiphase excitation of adjacent sections. In this case, contrary to the nonsectioned transducer, light...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/2/451 |
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| author | Vladimir Balakshy Maxim Kupreychik Sergey Mantsevich Vladimir Molchanov |
| author_facet | Vladimir Balakshy Maxim Kupreychik Sergey Mantsevich Vladimir Molchanov |
| author_sort | Vladimir Balakshy |
| collection | DOAJ |
| description | This paper presents the results of theoretical and experimental studies of anisotropic acousto-optic interaction in a spatially periodical acoustic field created by a phased-array transducer with antiphase excitation of adjacent sections. In this case, contrary to the nonsectioned transducer, light diffraction is absent when the optical beam falls on the phased-array cell at the Bragg angle. However, the diffraction takes place at some other angles (called “optimal” here), which are situated on the opposite sides to the Bragg angle. Our calculations show that the diffraction efficiency can reach 100% at these optimal angles in spite of a noticeable acousto-optic phase mismatch. This kind of acousto-optic interaction possesses a number of interesting regularities which can be useful for designing acousto-optic devices of a new type. Our experiments were performed with a paratellurite (TeO<sub>2</sub>) cell in which a shear acoustic mode was excited at a 9<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula> angle to the crystal plane (001). The piezoelectric transducer had to nine antiphase sections. The efficiency of electric to acoustic power conversion was 99% at the maximum frequency response, and the ultrasound excitation band extended from 70 to 160 MHz. The experiments have confirmed basic results of the theoretical analysis. |
| first_indexed | 2024-03-09T04:23:33Z |
| format | Article |
| id | doaj.art-123ac7f65af94fc4842ff797f8ce52b6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T04:23:33Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-123ac7f65af94fc4842ff797f8ce52b62023-12-03T13:43:47ZengMDPI AGMaterials1996-19442021-01-0114245110.3390/ma14020451Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information ProcessingVladimir Balakshy0Maxim Kupreychik1Sergey Mantsevich2Vladimir Molchanov3Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, RussiaFaculty of Physics, Lomonosov Moscow State University, 119991 Moscow, RussiaFaculty of Physics, Lomonosov Moscow State University, 119991 Moscow, RussiaAcousto-Optical Research Center at National University of Science and Technology MISIS, 119049 Moscow, RussiaThis paper presents the results of theoretical and experimental studies of anisotropic acousto-optic interaction in a spatially periodical acoustic field created by a phased-array transducer with antiphase excitation of adjacent sections. In this case, contrary to the nonsectioned transducer, light diffraction is absent when the optical beam falls on the phased-array cell at the Bragg angle. However, the diffraction takes place at some other angles (called “optimal” here), which are situated on the opposite sides to the Bragg angle. Our calculations show that the diffraction efficiency can reach 100% at these optimal angles in spite of a noticeable acousto-optic phase mismatch. This kind of acousto-optic interaction possesses a number of interesting regularities which can be useful for designing acousto-optic devices of a new type. Our experiments were performed with a paratellurite (TeO<sub>2</sub>) cell in which a shear acoustic mode was excited at a 9<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula> angle to the crystal plane (001). The piezoelectric transducer had to nine antiphase sections. The efficiency of electric to acoustic power conversion was 99% at the maximum frequency response, and the ultrasound excitation band extended from 70 to 160 MHz. The experiments have confirmed basic results of the theoretical analysis.https://www.mdpi.com/1996-1944/14/2/451acousto-opticsphased-array piezoelectric transducersacousto-optic materialsanisotropic Bragg diffractionacousto-optic devices |
| spellingShingle | Vladimir Balakshy Maxim Kupreychik Sergey Mantsevich Vladimir Molchanov Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing Materials acousto-optics phased-array piezoelectric transducers acousto-optic materials anisotropic Bragg diffraction acousto-optic devices |
| title | Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing |
| title_full | Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing |
| title_fullStr | Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing |
| title_full_unstemmed | Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing |
| title_short | Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing |
| title_sort | acousto optic cells with phased array transducers and their application in systems of optical information processing |
| topic | acousto-optics phased-array piezoelectric transducers acousto-optic materials anisotropic Bragg diffraction acousto-optic devices |
| url | https://www.mdpi.com/1996-1944/14/2/451 |
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