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Laser acoustic signal used in detection and communication has been widely concerned by people, and it is particularly important to analyze and calculate its intensity. The experimental platform of laser induced sound is built, and the intensity of laser induced sound signal is simulated and compared with the experimental results. The results show that the initial velocity of the signal generated by 1J laser energy under the influence of 32° convergence Angle is 5839m/s and the sound intensity is 1.468 × 1010pa. The attenuation of shock wave pressure and transmission velocity is studied, and it decays to constant within 1ms. The relationship between sound intensity and energy is calculated theoretically. The velocity and pressure of sound signal are positively correlated with laser energy. It is proposed and proved that the laser acoustic signal intensity can be improved by shortening the laser focal length through the simultaneous action of multiple lasers.

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Research on the Strength of Ocean Detection Communication Signals Based on Laser Induced Sound

  • 会议论文

  • 发表日期：

    2025年

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  • Tongchang Zhang,
  • Xiaolong Cao,
  • Yiguang Yang,
  • Yuchen Du,
  • Jianquan Yao

摘要

Laser acoustic signal used in detection and communication has been widely concerned by people, and it is particularly important to analyze and calculate its intensity. The experimental platform of laser induced sound is built, and the intensity of laser induced sound signal is simulated and compared with the experimental results. The results show that the initial velocity of the signal generated by 1J laser energy under the influence of 32° convergence Angle is 5839m/s and the sound intensity is 1.468 × 1010pa. The attenuation of shock wave pressure and transmission velocity is studied, and it decays to constant within 1ms. The relationship between sound intensity and energy is calculated theoretically. The velocity and pressure of sound signal are positively correlated with laser energy. It is proposed and proved that the laser acoustic signal intensity can be improved by shortening the laser focal length through the simultaneous action of multiple lasers.