Underwater 3D Imaging Utilizing 520 nm Chaotic Lidar

Wang, Bingjie; Guo, Zhiwen; Shen, Zhenmin; Xu, Hang; Liu, Li; Li, Jingxia

doi:10.1007/s10946-020-09892-8

Cited by 4 publications

(3 citation statements)

References 22 publications

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Section: Sensing By Laser Optical Chaosmentioning

confidence: 99%

“…Simulation results show that the system can improve resolution and anti-interference characteristics significantly. Moreover, chaotic radars have also been applied in underwater target detection [82] and underwater 3D imaging [83]. Another kind of laser-chaos-based sensing application is chaotic correlation optical time domain reflectometer (OTDR).…”

Section: Sensing By Laser Optical Chaosmentioning

confidence: 99%

See 1 more Smart Citation

Sensing by Dynamics of Lasers with External Optical Feedback: A Review

Liu

Jiang

2022

Photonics

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External optical feedback (EOF) has great impacts on the properties of lasers. It influences the stable operation of lasers. However, various applications based on lasers with EOF have been developed. One typical example is self-mixing interferometry technology, where modulated steady-state laser intensity is utilized for sensing and measurement. Other works show that laser dynamics can also be used for sensing, and the laser in this case is more sensitive to EOF. This paper reviews the sensing technology that uses the dynamics of lasers with EOF. We firstly introduce the basic operating principles of a laser with EOF and discuss the noise properties of and intensity modification in lasers induced by EOF. Then, sensing applications using laser dynamics are categorized and presented, including sensing by frequency-shifted optical feedback, relaxation oscillation frequency, and dynamics with self-mixing interferometry signals and laser optical chaos. Lastly, we present an analysis of the transient response waveform and spectrum of a laser with EOF, showing its potential for sensing.

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Section: Sensing By Laser Optical Chaosmentioning

confidence: 99%

Section: Sensing By Laser Optical Chaosmentioning

confidence: 99%

Sensing by Dynamics of Lasers with External Optical Feedback: A Review

Liu

Jiang

2022

Photonics

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“…They offer significant advantages in terms of measurement range, accuracy, and speed. In recent years, lasers have been increasingly integrated into the fields of vehicle-mounted airborne radar [1,2], environmental detection [3,4], celestial body detection [5][6][7][8], and medical sensing [9,10], to name a few. Currently, laser ranging methods encompass pulse ranging, phase ranging, triangulation ranging, incremental and absolute interference ranging, and frequency modulated continuous wave (FMCW) ranging.…”

Section: Introductionmentioning

confidence: 99%

Broadband High-Linear FMCW Light Source Based on Spectral Stitching

Sun,

Zhou,

Zhao

et al. 2024

Photonics

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The key to realizing a high-performance frequency-modulated continuous wave (FMCW) laser frequency-sweeping light source is how to extend the frequency-swept bandwidth and eliminate the effect of nonlinearity. To solve these issues, this paper designs a broadband high-linear FMCW frequency-sweeping light source system based on the combination of fixed temperature control and digital optoelectronic phase-locked loop (PLL), which controls the temperatures of the two lasers separately and attempts to achieve the coarse spectral stitching based on a time-division multiplexing scheme. Furthermore, we uses the PLL to correct the frequency error more specifically after the coarse stitching, which achieves the spectrum fine stitching and, meanwhile, realizes the nonlinearity correction. The experimental results show that our scheme can successfully achieve bandwidth expansion and nonlinearity correction, and the sweeping bandwidth is twice as much as that of the original single laser. The full-width half-maximum (FWHM) of the FMCW output is reduced from 150 kHz to 6.1 kHz, which exhibits excellent nonlinear correction performance. The relative error of the FMCW ranging system based on this frequency-swept light source is also reduced from 1.628% to 0.673%. Therefore, our frequency-swept light source with excellent performance has a promising application in the FMCW laser ranging system.

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Two-Stage Incremental Three-Dimensional Spatial Mapping Approach Using a Single-Layer Lidar

Wang

Lyu

et al. 2022

J Russ Laser Res

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Underwater 3D Imaging Utilizing 520 nm Chaotic Lidar

Cited by 4 publications

References 22 publications

Sensing by Dynamics of Lasers with External Optical Feedback: A Review

Sensing by Dynamics of Lasers with External Optical Feedback: A Review

Broadband High-Linear FMCW Light Source Based on Spectral Stitching

Two-Stage Incremental Three-Dimensional Spatial Mapping Approach Using a Single-Layer Lidar

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