| Abnormal Modulation of Dielectric Band Transmittance of Polystyrene Opal |
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| 作者姓名： | 胡小永 龚旗煌 程丙英 张道中 |
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| 作者单位： | [1]StateKeyLaboratoryforMesoscopicPhysics,DepartmentofPhysics,PekingUniversity,Beijing100871 [2]OpticalPhysicsLaboratory,InstituteofPhysicsandCenterforCondensedMatterPhysics,ChineseAcademyofSciences,Beijing100080 |
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| 摘 要： | The abnormal transmittance in the dielectric band edge of a polystyrene opal is observed and analysed. The transmittance is periodically modulated and the period of modulation varies with the wavelength, which destroys the perfect structure of the photonic band gap. The transmittance modulation originates from the propagation of the low order whispering-gallery mode excited in polystyrene spheres. These results indicate that the whisperinggallery mode has a great influence on practical applications of polystyrene opal.
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| 关 键 词： | 反常态调制 绝缘体 聚苯乙烯 导电体 |
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