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基于传递矩阵方法和光局域化原理,本文研究了一维反铁磁光子晶体共振频率附近光学双稳态效应随电磁波入射角、外磁场强度及电介质层数的变化.研究发现,当外磁场为1.0 kG(1 G=10~(-4)T)、电磁波小角度入射时,反铁磁材料高低共振频率附近均可探测到光学双稳态效应;当电磁波大角度入射时,仅在高共振频率附近探测到光学双稳态效应.然而,当外磁场强度增加到2.0 kG时,由于反铁磁材料的高低共振频率向两侧移动,低共振频率附近缺失的光学双稳态频率窗口又被有效激发.此外,电磁波小角度入射时,电介质层数在低共振频率附近对双稳态效应影响较明显.
Based on the transfer matrix method and optical localization theory, the change of the optical bistable effect around the resonant frequency of one-dimensional anti-ferromagnetic photonic crystal with the incident angle of electromagnetic wave, the intensity of external magnetic field and the number of dielectric layers were studied. 1.0 kG (1 G = 10 ~ (-4) T), the optical bistable effect can be detected near the high and low resonant frequencies of the antiferromagnetic material when the electromagnetic wave is incident at a small angle. When the electromagnetic wave is incident at a large angle, However, as the external magnetic field increases to 2.0 kG, the missing optical bistable frequency window near the low resonance frequency is again lost due to the high and low resonance frequencies of the antiferromagnetic material moving to both sides Effective excitation.In addition, the electromagnetic wave at a small angle of incidence, the dielectric layer near the low resonant frequency bistable effect more obvious.