【摘要】 碳点(Carbon dots, CDs)作为一种新型零维碳纳米材料，具有优良的荧光和磷光等光学特性。随着对CDs光学性能的不断探索，学者们发现其不仅在弱光下表现出优异的线性光学特性，在强光下也表现出良好的非线性光学特性，如非线性极化率较高、非线性吸收方式可变、光限幅阈值较低以及对飞秒等超快激光具有较快的响应等，在军事、通信和医疗等领域中展现出巨大潜力。据此，本文对CDs非线性光学性质的调控及应用进行综述。首先，总结出CDs本体(CDs尺寸、掺杂元素和表面官能团等)及其外部环境(液态分散基质、固态分散基质和入射激光能量等)对其非线性光学性质的影响；其次，介绍其在光限幅、光开关、生物应用和物质检测等非线性光学方面的应用研究进展；最后，提出目前CDs在非线性光学领域中面临的问题，并对其进行展望。更多还原

【Abstract】 Carbon dots(CDs), as a novel type of zero-dimensional carbon nanomaterials, have excellent optical properties such as fluorescence and phosphorescence. With the continuous exploration of the optical properties of CDs, it is found that CDs not only exhibit excellent linear optical properties under weak light, but also exhibit outstanding nonlinear optical properties under strong light. These advantages of CDs include high nonlinear susceptibility, variable nonlinear absorption mode, low optical limiting threshold, and quick response to femtosecond and other ultrafast lasers. Thus, CDs exhibit great potential in the military, communication and medical fields. Herein, this review summarizes the regulation modes of CDs with nonlinear optical properties and their applications. Firstly, the influences from CDs themselves(CDs size, doping elements, surface functional groups, etc.) and their external environments(liquid matrix, solid matrix, laser energy, etc.) on their nonlinear optical properties are discussed. Secondly, the applications of CDs in nonlinear optical fields including optical limiting, optical switching, biology, and detection are introduced. Finally, the current problems and future potentials for applying CDs to nonlinear optics are proposed and prospected.更多还原