Programmable random lasing pulses are highly desired due to their promising applications in information security, flexible encoding systems, and smart imaging. However, the fixed random scattering configuration hinders their realization. Herein, a programmable random laser is designed to dynamically regulate random lasing pulses through introducing an external waveguide structure with random scattering feedback. Liquid and solid film random lasers are thus separately achieved. Most importantly, various pulse time series of random lasing can be flexibly realized by switching the adhesion/separation state between the gain and the destroyed waveguide structure. The Feinam coding system is further realized for encryption and information transmission by combining programmable random pulses. The results may widely expand the application prospects of random lasers in the fields of optical data recording, dynamic security labels, smart sensing, and flexible imaging.

中文翻译：

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基于波导辅助的随机散射反馈的可编程随机激光脉冲加法器

由于可编程随机激射脉冲在信息安全，灵活的编码系统和智能成像中的应用前景十分广阔，因此非常需要可编程激射脉冲。然而，固定的随机散射配置阻碍了它们的实现。这里，可编程随机激光器被设计为通过引入具有随机散射反馈的外部波导结构来动态地调节随机激射脉冲。因此分别获得了液体和固体膜随机激光器。最重要的是，通过在增益和破坏的波导结构之间切换粘附/分离状态，可以灵活地实现随机激射的各种脉冲时间序列。通过组合可编程随机脉冲，Feinam编码系统可进一步实现加密和信息传输。