Chaotic laser generated by semiconductor lasers has been attached great importance in areas of secure communication, random number generation, and optical sensing. This article mainly reviews the research progress in the performance improvement of chaotic laser, including bandwidth enhancement and time-delay signature suppression. First, the methods of chaotic laser generation and the existing problems are briefly introduced. Then, innovative methods for the optimization of chaotic characteristics are analyzed and discussed. The integrated chaotic semiconductor lasers are also discussed. At last, avenues for the development trends and future applications of chaotic semiconductor lasers are prospected.

中文翻译：

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宽带时延特征抑制混沌激光器综述

半导体激光器产生的混沌激光在保密通信、随机数生成、光学传感等领域受到了高度重视。本文主要回顾了混沌激光器性能提升方面的研究进展，包括带宽增强和时延特征抑制。首先简要介绍了混沌激光的产生方法和存在的问题。然后，对混沌特性优化的创新方法进行了分析和讨论。还讨论了集成混沌半导体激光器。最后对混沌半导体激光器的发展趋势和未来应用进行了展望。