Chaotic microlasers caused by internal mode interaction for random number generation

Chun-Guang Ma; Jin-Long Xiao; Zhi-Xiong Xiao; Yue-De Yang; Yong-Zhen Huang

doi:10.1038/s41377-022-00890-w

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Chaotic microlasers caused by internal mode interaction for random number generation

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- Chaotic microlasers caused by internal mode interaction for random number generation
- Light: Science & Applications Vol. 11, Issue 7, Pages: 1565-1574(2022)
- Affiliations：
  
  1.State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
  2.Center of Material Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- Author bio：
  
  Yong-Zhen Huang (yzhuang@semi.ac.cn)
- Funds：
- DOI：10.1038/s41377-022-00890-w
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Ma, C. G. et al. Chaotic microlasers caused by internal mode interaction for random number generation. Light: Science & Applications, 11, 1565-1574 (2022).
DOI：

Ma, C. G. et al. Chaotic microlasers caused by internal mode interaction for random number generation. Light: Science & Applications, 11, 1565-1574 (2022). DOI： 10.1038/s41377-022-00890-w.

摘要

Abstract

Chaotic semiconductor lasers have been widely investigated for generating unpredictable random numbers, especially for lasers with external optical feedback. Nevertheless, chaotic lasers under external feedback are hindered by external feedback loop time, which causes correlation peaks for chaotic output. Here, we demonstrate the first self-chaotic microlaser based on internal mode interaction for a dual-mode microcavity laser, and realize random number generation using the self-chaotic laser output. By adjusting mode frequency interval close to the intrinsic relaxation oscillation frequency, nonlinear dynamics including self-chaos and period-oscillations are predicted and realized numerically and experimentally due to internal mode interaction. The internal mode interaction and corresponding carrier spatial oscillations pave the way of mode engineering for nonlinear dynamics in a solitary laser. Our findings provide a novel and easy method to create controllable and robust optical chaos for high-speed random number generation.

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