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利用格林函数方法量子化色散吸收介质中的电磁场,针对由三层色散吸收介质组成的一维光学系统,研究其中光场的量子理论,借助起伏耗散定理给出色散吸收介质光腔中光场量子起伏的功率谱,并通过数值计算结果分析和讨论介质的色散吸收性质对光学器件工作性能的影响。结果表明,系统的工作状态与所选光场频率密切相关,并且每一区域中介质的色散吸收性不但影响自身区域的电场起伏功率谱,而且明显地连带另一侧介质中电场起伏功率谱的变化行为。此结果对于研究复杂的介质分布与结构体系在光通信、现代光学工程、微波技术等领域中的实际应用有着重要的指导意义。
The Green’s function method is used to quantify the electromagnetic field in the dispersion absorbing medium. For the one-dimensional optical system composed of three-layer dispersion absorbing medium, the quantum theory of the light field is studied. The light field in the optical cavity of the dispersion absorbing medium Quantum fluctuations of the power spectrum, and through the numerical results of the analysis and discussion of the dispersion properties of the medium on the performance of optical devices. The results show that the working state of the system is closely related to the selected optical field frequency, and the dispersion absorptivity of the medium in each region not only affects the power fluctuation spectrum of the electric field in its own region, but also obviously relates to the fluctuation spectrum of the electric field in the medium on the other side Change behavior. This result is of great significance for the study of the practical application of complex medium distribution and structure system in the fields of optical communication, modern optical engineering and microwave technology.