含负折射率材料光量子阱透射谱对比研究

Comparative Study on Transmission Spectrum of Optical Quantum Well Containing Negative Refractive Index Materials

摘要: 利用传输矩阵法研究含正负折射率材料构造的一维对称结构光量子阱(AB)_m(CDDC)_n(BA)_m传输特性，并通过对比全正折射率材料光量子阱的透射谱，结果表明：当光量子阱的垒层(AB)_m(BA)_m为正负折射率材料混合结构时，透射谱出线三条透射峰，较全正折射率材料光量子阱透射峰变窄，禁带变宽；当阱层(CDDC)_n为材料混合结构时，透射谱仅在中心频率位置出现一条透射峰，且透射峰变宽；当垒层和阱层同时为混合结构时，透射谱仅在中心频率位置出现一条透射峰，且透射峰变窄，禁带明显变宽；当垒层或阱层全负负折射率材料时，透射谱出现三透条射峰，透射峰变宽，禁带变宽。正负折射率材料混合构建的光量子阱的透射谱特性，为设计和制造新型光学器件提供理论依据。

Abstract: The transmission matrix method is used to study the transmission characteristics of a one-dimen- sional symmetric structured optical quantum well (AB)_m(CDDC)_n(BA)_m constructed with materials with positive and negative refractive index, and compare with the full positive refractive index materials. The results show that when the barrier layer (AB)_m(BA)_m of the optical quantum well is a mixed structure of positive and negative refractive index materials, the three transmission peaks of the transmission spectrum are narrower than the transmission peak of the optical quantum well of the full positive refractive index material, and the forbidden band becomes wider. When the well layer (CDDC)_n is a material mixing structure, the transmission spectrum only shows a transmission peak at the center frequency position, and the transmission peak becomes wider; when the barrier layer and the well layer are simultaneously mixed structures, the transmission spectrum is only one transmission peak appears at the center frequency position, and the transmission peak becomes narrower, and the forbidden band becomes significantly wider. When the barrier layer or the well layer is completely negatively refractive, the transmission spectrum exhibits transmission peaks, the transmission peaks become wider, and the forbidden band widening. The study of the transmission spectrum characteristics of the optical quantum well constructed with a mixture of positive and negative refractive index materials provides a theoretical basis for the design and manufacture of new optical devices.