随机激光因其体积小、成本低、Q值高等特点，在生物组织超清成像、无散斑投影、新型光源等领域具有较好的应用前景。目前，上转换随机激光器件的研究中存在输出效率低、散射介质设计繁琐、发光模式难控制、成本高等问题。基于此，本课题拟在锆钛酸铅镧材料中构建出电场可控的散射阵列结构, 实现低阈值、高效率、模式/方向可控的高性能上转换随机激光器。具体研究内容如下: 1）基于C-SALT散射激光理论和光子扩散理论，建立以电致散射为中介的可控散射体系；2）拟阐明可控电致散射体系中，光子定域效应对PL强度、随机激光模式、倍频/差频等非线性过程的增强或抑制的内部机理; 3）探索掺钕锆钛酸铅镧材料中多功能、低阈值、小型化、模式可控的上转换随机激光输出。如果能成功实现对可控电致散射体系的优化设计和高性能上转换随机激光器，有望推动其在微观成像、高品质投影和传感等领域的发展。

Due to its small size, low cost and high Q value, random laser has a better application prospect in the field of ultrafine imaging, speckle projection and new light source. At present, the research of the upconversion random laser devices has the problems of low output efficiency, tedious design of scattering medium, difficult control of luminescence mode and high cost. Because of it, this project is proposed to realize low threshold, high efficiency, mode/direction controllable high performance upconversion random laser by constructing controllable electroinduced scattering array structure, and the research items are as follows: 1) based on C-SALT scattering laser theory and photon diffusion theory, a controllable scattering system based on electric scattering is established; 2) In the controllable electroinduced scattering system, we propose to illustrate the underlying mechanism of the enhancement or suppression of the nonlinear processes such as PL intensity, random laser mode, sum/difference frequency and so on; 3) The multifunctional, low-threshold, miniaturized and controllable up-conversion random laser output of lead lanthanum doped zirconium titanate is proposed to be studied. If the optimal design of controllable electroinduced scattering system and high performance upconversion random laser devices can be realized successfully, it is expected to promote its development in the field of micro imaging, projection and sensing.