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<p>Temporal ghost imaging (TGI) enables high-speed information reconstruction from low-bandwidth detection by leveraging self-correlation properties of random light signals. Here, we experimentally demonstrate for the first time the chaos-based TGI using an optical-feedback semiconductor laser. Results reveal the effects of feedback strength and time delay signature and find that the low-frequency energy of chaotic signal within the slow-detection bandwidth determines the imaging quality. By optimizing feedback strength, TGI with a quality factor beyond 3 for 8-Gbit/s NRZ signals is achieved by using a chaotic laser with a relaxation frequency of 6 GHz and 1-GHz detection bandwidth. This work introduces a promising TGI technique, because the use of chaotic lasers overcomes the limitations of conventional random sources in signal amplitude and system integration. Furthermore, considering the phenomenon of chaotic synchronization, this work has the potential to inspire research on secure information transmission based on chaos TGI.</p>

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Optical-chaos temporal ghost imaging

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Rong Zhang,
  • Anbang Wang,
  • Longsheng Wang,
  • Zhiwei Jia,
  • Yuncai Wang,
  • Yuwen Qin

摘要

Temporal ghost imaging (TGI) enables high-speed information reconstruction from low-bandwidth detection by leveraging self-correlation properties of random light signals. Here, we experimentally demonstrate for the first time the chaos-based TGI using an optical-feedback semiconductor laser. Results reveal the effects of feedback strength and time delay signature and find that the low-frequency energy of chaotic signal within the slow-detection bandwidth determines the imaging quality. By optimizing feedback strength, TGI with a quality factor beyond 3 for 8-Gbit/s NRZ signals is achieved by using a chaotic laser with a relaxation frequency of 6 GHz and 1-GHz detection bandwidth. This work introduces a promising TGI technique, because the use of chaotic lasers overcomes the limitations of conventional random sources in signal amplitude and system integration. Furthermore, considering the phenomenon of chaotic synchronization, this work has the potential to inspire research on secure information transmission based on chaos TGI.