Diffraction of Light by Adjacent Parallel Ultrasonic Waves with Arbitrary Frequencies (NOA-Method)
The diffraction of light by two parallel adjacent ultrasonic waves, with respective frequencies ν 1* and ν 2* is studied, in the case that each wave only produces diffractions of the orders 0, ±1. A combination of the methods of Nagendra Nath and Nagabushana Rao, respectively for normal and oblique incidence of the light is made, and general expressions for the intensities of the diffracted light beams are established. The special case ν 2* = 2 ν 1* is examined in detail and it is found that the diffraction pattern is always asymmetric. Numerical calculations have been performed for several values of the parameters. It is observed that this problem presents fundamental differences compared with the one of diffraction of light by superposed parallel ultrasonic waves.
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Document Type: Research Article
Publication date: February 1, 1972
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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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