Light diffraction in an inhomogeneous acoustic field excited by wedge-shaped and parabolic transducers
Department of Physics, M.V. Lomonosov Moscow State University, 119992 Moscow, Russia
2 Institute of Experimental Physics, University of Gdańsk, 80-952 Gdańsk, Poland
Light diffraction in acoustic fields created by wedge-shaped and parabolic piezoelectric transducers is theoretically investigated. It is shown that the acoustic fields have a complicated amplitude-phase structure changing with the acoustic frequency. Principal characteristics of acousto-optic interaction are examined. It is demonstrated that the diffraction efficiency in the Bragg regime can approach 100% in spite of a noticeable phase mismatch.
© EDP Sciences, Springer-Verlag, 2008