Optical Polarization Effects in Isotropic Media with Acoustically Induced Birefringence
The polarization changes and symmetry properties of linearly polarized light passing through an isotropic medium with acoustically induced anisotropy are described for normal light incidence and for sound frequencies which are typical for ultrasonic light diffraction in the Raman-Nath and intermediate region. In the former case, a rotation of the polarization plane occurs in all orders of diffraction with the angle of the rotation being a function of the voltage applied to the transducer. In the latter case, an additional effect appears: the polarization of the light in all diffraction orders in general becomes elliptical and, at suitable acoustic frequency and amplitude, circular polarization is possible in the zero order of diffraction. Experimental results are included in the case of argon laser light ( = 0.488 m) being diffracted by a 48.5 MHz sound wave propagating in fused SiO2. Comparison between the theoretically predicted values and the experimental measurements made for the intermediate diffraction regime confirm the theoretical model.
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Document Type: Research Article
Publication date: 01 November 1999
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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