Peculiarities of the modulation of optical radiation during magnetomechanical oscillations in bilayer composite structures
DOI:
https://doi.org/10.3103/S0735272715030048Keywords:
magnetomechanical oscillations, magneto-optical crystal, resonance, magneto-passive layer, magnetostrictionAbstract
Peculiarities of the modulation of optical radiation during the excitation of magnetomechanical oscillations in a composite structure consisting of magneto-optical crystal and magneto-passive layer have been studied. Analytical expressions for the amplitude- and phase-frequency characteristics of a magneto-optical light modulator based on the Faraday effect for a low-frequency mode under conditions of magnetomechanical resonance were obtained. The results of theoretical and experimental investigations of a modulator in the form of bilayer composite structure consisting of yttrium iron garnet and quartz glass were presented. The relative change of the amplitude of polarization plane rotation in the region of resonance frequencies at the level of 25% and the phase delay of 22° were obtained experimentally.
References
LINCHEVSKYI, I.V.; PETRISHCHEV, O.N. Determination of material constants of magneto-optical crystals using the Faraday effect under magneto-mechanical resonance conditions. Ukr. J. Phys., 2011, v.56, n.5, p.496-502, http://www.ujp.bitp.kiev.ua/files/journals/56/5/560514pu.pdf.
ARHIPSKYI, A.O.; LINCHEVSKYI, I.V. Auto-generator on magnetic-optical crystal. Izv. Vyssh. Uchebn. Zaved., Radioelektron., 2013, v.56, n.3, p.45-51, http://radio.kpi.ua/article/view/S0021347013030059 [Radioelectron. Commun. Syst., 2013, v.56, n.3, p.141-146, DOI: http://dx.doi.org/10.3103/S0735272713030059].
LINCHEVSKYI, I.V.; SHEVCHENKO, T.I.; TRON’KO, V.D. Features of the stokes vector of polarized radiation when passing through a magneto-optical crystal under conditions of magnetomechanical resonance. Optics and Spectroscopy, 2013, v.114, n.1, p.112-115, DOI: http://dx.doi.org/10.1134/S0030400X13010189.
BICHURIN, M.I.; PETROV, R.V.; PETROV, V.M. Magnetoelectric effect at thickness shear mode in ferrite-piezoelectric bilayer. Appl. Phys. Lett., 2013, v.103, n.9, p.092902, DOI: http://dx.doi.org/10.1063/1.4819477.
VLASOV, K.B. State equation of polarization magnetoelastic medium. Metal Physics and Metal Science, 1956, v.3, n.3, p.551-553.
LANDAU, L.D.; LIFSHITS, E.M. The Theory of Elasticity. Moscow: Nauka, 1987, 247 p. [in Russian].
BOZORTH, R.M. Ferromagnetism, reprint. Wiley-IEEE Press, 1993, ISBN: 978-0-7803-1032-2.
BONDARENKO, A.A.; KUTSENKO, G.V.; ULITKO, A.F. Amplitudes and phases of longitudinal vibrations of piezoceramic rods with account of variable mechanical quality factor. Soviet Applied Mechanics, 1980, v.16, n.11, p.1001-1004, DOI: http://dx.doi.org/10.1007/BF00884884.
CHICHARRO, J.M.; BAYON, A.; SALAZAR, F. Measurement of field-dependence elastic modulus and magnetomechanical coupling factor by optical heterodyne interferometry. J. Magn. Magn. Mater., Aug. 1999, v.202, p.465-472, DOI: http://dx.doi.org/10.1016/S0304-8853(99)00415-1.
