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在实验上发现了 3μm聚苯乙烯 (PS)小球光子晶体在 35 0nm至 90 0nm波长上的透过率的周期扰动 .根据透过率曲线的周期扰动的峰谷值判断 ,这种周期性透过率特性是基于PS小球的whispering gallery mode(WGM)共振 ,而不是源于米氏散射或布拉格衍射 .实验表明 ,周期性排列小球在非带隙区域对光的传输同样有一定的影响 .这一结果对光子晶体薄膜的应用提供了新的可能性
The periodic perturbations of the transmittance of 3μm polystyrene (PS) photonic crystal at 35 0 nm to 90 0 nm were found experimentally.According to the peak-valley value of the periodic perturbation of the transmittance curve, this periodicity The transmittance characteristics are based on the whispering gallery mode (WGM) resonance of the PS pellets rather than from the Mie scattering or Bragg diffraction. Experiments show that the periodically arranged pellets also have some light transmission in the non-bandgap region This result offers new possibilities for the application of photonic crystal films