Light Modulator on the Basis of Magneto-Optical Crystal in a Bimorphic Structure Operating in the Magneto-Mechanical Vibration Mode

  • I. V. Linchevskyi National Technical University of Ukraine “Kyiv Polytechnical Institute”
  • O. N. Petrischev National Technical University of Ukraine “Kyiv Polytechnical Institute”
Keywords: Faraday effect, magneto-optical crystal, bimorphic element

Abstract

A model of light modulator based on a bimorphic element consisting of a magneto-optical crystal layer on a magnetically passive substrate has been proposed. An equation describing magneto-mechanical vibrations in a rectangular bimorphic element with asymmetric thickness is derived, and an algorithm of its solution in the case of a specimen with free edges is proposed. The modulator is shown to be characterized by a two-dimensional distribution function for the rotation angle of the polarization plane in a light-beam cross-section. Calculations for bismuth-substituted yttrium ferrite garnet on a gadolinium-gallium substrate showed that the rotation angle of the light-beam polarization plane owing to the Faraday effect can reach 3∘ for the fundamental mode of bimorphic element vibrations.

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Published
2018-10-25
How to Cite
Linchevskyi, I., & Petrischev, O. (2018). Light Modulator on the Basis of Magneto-Optical Crystal in a Bimorphic Structure Operating in the Magneto-Mechanical Vibration Mode. Ukrainian Journal of Physics, 59(10), 972. https://doi.org/10.15407/ujpe59.10.0972
Section
Optics, lasers, and quantum electronics