Unpolarized light diffraction in an acoustic field created by a phased array transducer

2016 ◽  
Author(s):  
Andrey Voloshin ◽  
Vladimir Balakshy ◽  
Sergey Mantsevich
Keyword(s):  
Acoustic Field ◽  
Phased Array ◽  
Light Diffraction ◽  
Unpolarized Light ◽  
Array Transducer

The Effect of Cross-Coupling in the Acoustic Field Generated by a Phased Array Transducer

1996 ◽  
pp. 479-482
Author(s):  
A. Gubbini ◽  
C. Lamberti ◽  
P. Palchetti ◽  
A. Sarti
Keyword(s):  
Acoustic Field ◽  
Phased Array ◽  
Cross Coupling ◽  
Array Transducer

Modeling Study of a Linear Ultrasonic Phased Array Transducer

2013 ◽  
Vol 441 ◽  
pp. 470-475
Author(s):  
De Xin Zhou ◽  
Xue Qian Tang ◽  
Xiang Lin Zhan
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
Acoustic Field ◽  
Phased Array ◽  
The Finite Element Method ◽  
Fem Modeling ◽  
Ultrasonic Wave Propagation ◽  
Beam Focusing ◽  
Array Transducer ◽  
Ultrasonic Phased Array

A numerical simulation model based on the finite element method (FEM) and wave analysis is proposed to study the acoustic field of a linear instructions and ultrasonic phased array (LUPA) transducer. The ultrasonic wave propagation in the isotropic solid is studied. The delay law controlling for electronic scanning of a LUPA transducer is analyzed. The ultrasonic wave propagation in the inspection material can be visualized in the form of displacement cloud images by FEM modeling. Experiments show that the model can efficiently and accurately predict the radiation field of beam focusing, steering and electronic scanning of a linear phased array transducer. By employing the proposed method, parameters can be conveniently changed to study the acoustic field of the ultrasonic beam in the medium. It is very helpful for designing and applying the linear phased array transducer and flaw inspection in NDT field.

scholarly journals Acousto-Optic Cells with Phased-Array Transducers and Their Application in Systems of Optical Information Processing

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 451
Author(s):  
Vladimir Balakshy ◽  
Maxim Kupreychik ◽  
Sergey Mantsevich ◽  
Vladimir Molchanov
Keyword(s):  
Phased Array ◽  
Power Conversion ◽  
Experimental Studies ◽  
Acoustic Power ◽  
Acoustic Mode ◽  
Bragg Angle ◽  
Excitation Band ◽  
Acousto Optic Interaction ◽  
Array Transducer ◽  
New Type

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 (TeO2) cell in which a shear acoustic mode was excited at a 9∘ 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.

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