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对周期性的GaAlAs/AlAs模块堆积组成的有缺陷的一维光子晶体的光波传输模式进行了理论与实验研究。由于堆积结构的周期性受到破坏,导致了光子晶体中模密度发生变化,光波的传播也发生了变化。对模密度和光的传播模式分别用流行的光子能态理论和光学传输矩阵进行了计算和模拟。计算发现采用不对称结构的一维光子晶体结构在实际应用中有更大的灵活性。用金属有机物化学汽相沉积方法实现一维光子晶体,并用于裁剪普通的发光二极管电致发光谱,在20 mA的激发电流下,半峰全宽为2.8 nm,单色性优于共振腔发光二极管。在较大的激发电流下,带边发射的增强现象也被观测到。
The theoretical and experimental studies on the optical transmission modes of the one-dimensional photonic crystals with defects in the periodic GaAlAs / AlAs stacks are carried out. Due to the periodic damage of the stacking structure, the density of photonic crystals changes and the propagation of light waves also changes. The modal density and light propagation modes are calculated and simulated respectively using the popular photon energy theory and optical transfer matrix. The calculation shows that the one-dimensional photonic crystal structure with asymmetric structure has more flexibility in practical application. One-dimensional photonic crystals were fabricated by metal-organic chemical vapor deposition and used to tailor the conventional electroluminescence spectra. The full width at half maximum (FWHM) was 2.8 nm at 20 mA and the monochromaticity was better than that of the resonant cavity diode. At larger excitation currents, the enhancement of the edge emission is also observed.