Open AccessTHEORY OF GUIDED-WAVE MAGNETOOPTIC BRAGG DIFFRACTION IN YIG-GGG WAVEGUIDE UNDER INCLINED BIAS MAGNETIC FIELD
Author(s) -
Gongqiang Liu,
C.S. Tsai
Publication year - 1998
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.47.1213
Subject(s) - bragg's law , materials science , optics , diffraction , magnetic field , waveguide , faraday effect , faraday cage , perpendicular , condensed matter physics , physics , quantum mechanics , geometry , mathematics
A theoretical Treatment is presented on the propagation characteristics of magnetostatic forward volume waves and related guided-wave magnetooptic (MO) Bragg diffraction in an YIG-GGG waveguide under an inclined bias magnetic field.It is found that,in contrast to the usual situation of a perpendicular bias magnetic field,an inclined bias magnetic field leads to the modification to the phase matching condition and,as a result of increased Faraday effect etc.,facilitates enhancement of MO Bragg diffraction efficiency.Such an efficiency enhancement enables utilization of low-propagation loss materials such as the pure YIG for construction of viable guided-wave MO Bragg devices.The theoretical predictions are in good agreement with the experimental results.