设计了一种基于米散射激光雷达的大气气溶胶检测系统。依据米散射激光雷达的原理，研究了激光光束与大气气溶胶的相互作用，设计并搭建了米散射激光雷达大气气溶胶检测实验平台，利用Zemax设计了一套具有滤波聚焦功能的光学望远系统。通过对光束进行扩束并利用可调谐式固定装置来增强回波信号强度。实验结果表明，设计的系统具有高的回波信号强度和低的杂散光干扰，能获得超高信噪比的激光回波信号。由此大大降低了后续算法的难度，使测得的气溶胶数据更加准确。

针对水污染的检测，设计了一种基于STM32的水浊度在线实时检测系统。该系统基于国际标准（ISO7027—1984）中的透射法，通过将一束光打到一定厚度的水样中，测量透射光强度的衰减量来确定水样的浊度。实验结果表明：实际测量值与浊度标准液对比值的平均相对误差在4%以内，具有一定的可行性，可以实现对水浊度的实时监测。所设计的系统成本低，体积小，携带方便，检测方式简单，可用于日常生活中对水质的检测。

We study the parametric amplification of electromagnetically induced transparency-assisted Rydberg six- and eight-wave mixing signals through a cascaded nonlinear optical process in a hot rubidium atomic ensemble both theoretically and experimentally. The shift of the resonant frequency (induced by the Rydberg–Rydberg interaction) of parametrically amplified six-wave mixing signal is observed. Moreover, the interplays between the dressing effects and Rydberg–Rydberg interactions in parametrically amplified multiwave mixing signals are investigated. The linear amplification of Rydberg multiwave mixing processes with multichannel nature acts against the suppression caused by Rydberg–Rydberg interaction and dressing effect.