Reciprocal conversion of sound and electromagnetic waves under conditions of Doppler-shifted cyclotron resonance

Abstract Direct reciprocal conversion of sound and electromagnetic waves has been realized in a single crystal of tungsten in the external magnetic field. Experiment was carried out at frequencies 40–160 MHz with geometry H ∥ q ∥[100]. It is shown that oscillatory singularities of the conversion coefficient are caused by Doppler-shifted acoustic cyclotron and Doppleron-phonon resonances.