Fan Linran, Yan Xiaodong, Wang Han, Wang Lihong V
Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering and Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA.
Sci Adv. 2021 Jan 13;7(3). doi: 10.1126/sciadv.abc8448. Print 2021 Jan.
Optical chaotic system is a central research topic due to its scientific importance and practical relevance in key photonic applications such as laser optics and optical communication. Because of the ultrafast propagation of light, all previous studies on optical chaos are based on either static imaging or spectral measurement, which shows only time-averaged phenomena. The ability to reveal real-time optical chaotic dynamics and, hence, control its behavior is critical to the further understanding and engineering of these systems. Here, we report a real-time spatial-temporal imaging of an optical chaotic system, using compressed ultrafast photography. The time evolution of the system's phase map is imaged without repeating measurement. We also demonstrate the ability to simultaneously control and monitor optical chaotic systems in real time. Our work introduces a new angle to the study of nonrepeatable optical chaos, paving the way for fully understanding and using chaotic systems in various disciplines.
光学混沌系统因其在激光光学和光通信等关键光子应用中的科学重要性和实际相关性，而成为一个核心研究课题。由于光的超快传播，以往所有关于光学混沌的研究都是基于静态成像或光谱测量，这些方法仅显示时间平均现象。揭示实时光学混沌动力学并进而控制其行为的能力，对于进一步理解和设计这些系统至关重要。在此，我们报告了利用压缩超快摄影对光学混沌系统进行实时时空成像。无需重复测量即可对系统相位图的时间演化进行成像。我们还展示了实时同时控制和监测光学混沌系统的能力。我们的工作为不可重复光学混沌的研究引入了一个新视角，为全面理解和利用各学科中的混沌系统铺平了道路。
