Open AccessProperties of Magnetostatic Wave Propagating in YIG Waveguide Under Inclined Magnetization
Author(s) -
WU Bao-jian,
Gongqiang Liu
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.286
Subject(s) - amplitude , condensed matter physics , magnetization , magnetic field , physics , propagation constant , field (mathematics) , waveguide , constant (computer programming) , diffraction , optics , mathematics , quantum mechanics , computer science , pure mathematics , programming language
The characteristics of magnetostatic forward volume waves (MSFVWs) propagating in magneto-optical (MO) film waveguide under inclined bias magnetic field are analyaed. The dependences of MSFVW propagation constant and dynamic magnetization related to the MO coupling coefficients on mode number, frequency and inclined bias magnetic field are calculated in detail. It is shown that the greater the MSFVW frequency f and the mode number m as well as the less bias magnetic field Hi and inclination θ, the greater MSFVW propagation constant Ks is; the amplitude of zero-mode MSFVWs is much greater than that of high-mode MSFVWs. In an appropriate frequency range, MSFVW amplitude can be increased under an inclined bias magnetic field, and then the diffraction efficiency of guided optical waves with MSFVWs is improved.