Acousto-optic interaction in a non-homogeneous acoustic field excited by a wedge-shaped transducer
| Autor: | Vladimir I. Balakshy, Bogumił B. J. Linde, Anna N. Vostrikova |
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| Rok vydání: | 2008 |
| Předmět: |
Physical acoustics
Optics and Photonics Materials science Light Acoustics and Ultrasonics Piezoelectric sensor Acoustics Transducers Physics::Optics Diffraction efficiency Optics Image Interpretation Computer-Assisted Scattering Radiation Acoustic wave equation Computer Simulation business.industry Equipment Design Acoustic wave Models Theoretical Ion acoustic wave Equipment Failure Analysis Transducer Computer Science::Sound Computer-Aided Design Elasticity Imaging Techniques Surface acoustic wave sensor business |
| Zdroj: | Ultrasonics. 48:351-356 |
| ISSN: | 0041-624X |
| Popis: | The article is devoted to theoretical analysis of light diffraction in a non-homogeneous acoustic field created by a wedge-shaped piezoelectric transducer. Relationships describing electrical, acoustic and acousto-optic properties of the acousto-optic cell are derived in the approximation of a small thickness of the piezoelectric plate. Principal characteristics of acousto-optic interaction are examined such as dependences of the light diffraction efficiency on the phase mismatch and the acoustic wave amplitude. It is shown that the acoustic field has a complicated amplitude-phase structure changing with the acoustic frequency. It is demonstrated that the diffraction efficiency in the Bragg regime can approach 100% in spite of a noticeable phase mismatch. The appropriate optimal values of ultrasound power and incidence angles of light are found. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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