Diffraction of Light by Ultrasonic Waves of Finite Amplitude (I) Theory

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  • Nomoto Otohiko
    Kobayashi Institute of Physical Research, Kokubunzi, Tokyo:Applied Physics Department, Defence Academy, Yokosuka
  • Negishi Katsuo
    Institute of Industrial Science, University of Tokyo

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Other Title
  • 有限振幅の超音波による光の回折(1)理論
  • 理論
  • リロン

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Abstract

An exact analytical expression in compact form is obtained for the intensity distribution of the diffraction spectra produced by sawtooth ultrasonic waves. The intensity of the s-th order diffraction spectrum is expressed as Is=[v/(v-sk)J_s(v-sk)]^2, s=0, ±1, ±2, . . . . . where v is the phase-lattice parameter (amplitude of phase modulation of the light wavefront produced by crossing the ultrasonic beam), and k is the sawtooth parameter. J_s is the Bessel function of the s-th order, and the sign of s is positive for the diffraction spectra with positive components of the propagation vector in the direction of propagation of ultrasound. General aspects of the diffraction spectrum of light produced by sawtooth waves are discussed.

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