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Anti-interference chaotic laser ranging by using ultrafast noise-like pulses
Optics Letters
|November 4, 2025
Summary
This study introduces a novel laser ranging system using noise-like pulses for enhanced anti-interference capabilities. The system achieves millimeter-level resolution and material reflectivity detection, improving light detection and ranging (LiDAR) technology.
Area of Science:
- Optics and Photonics
- Laser Technology
- Signal Processing
Background:
- Growing demands for light detection and ranging (LiDAR) drive research into advanced laser ranging technologies.
- Chaotic laser states offer superior anti-interference and range ambiguity solutions compared to coherent states.
- Ultrafast fiber lasers are key components in developing novel ranging systems.
Purpose of the Study:
- To propose and demonstrate a laser ranging system utilizing noise-like pulses.
- To leverage the inherent anti-interference properties of chaotic laser signals.
- To achieve high-resolution distance and reflectivity measurements.
Main Methods:
- Emission of noise-like pulses from an ultrafast fiber laser.
- Time stretching of pulses to map spectral information to the temporal domain.
- Cross-correlation analysis between reference and signal light for detection.
Main Results:
- Millimeter-level resolution in distance measurement.
- Detection of relative material reflectivity.
- High signal-to-noise ratio maintained even with external interference.
- Demonstrated resistance to interference due to inherent pulse properties.
Conclusions:
- The proposed noise-like pulses-based system offers a robust solution for anti-interference ranging.
- This technology provides new insights for the advancement of LiDAR systems.
- The system effectively distinguishes materials based on reflectivity while providing precise distance data.
