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A Protocol for Real-time 3D Single Particle Tracking

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Streak Tube-Based LiDAR for 3D Imaging.

Houzhi Cai¹, Zeng Ye¹, Fangding Yao¹

¹Key Laboratory of Optoelectronic Devices and Systems of Education and Guangdong Province, Shenzhen Key Laboratory of Photonics and Biophotonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.

Sensors (Basel, Switzerland)

|September 13, 2025

Summary

Streak tube imaging LiDAR (STIL) systems achieve high-resolution 3D imaging by detecting fast optical signals. This flash LiDAR technology offers precise ranging and micron-scale depth discrimination for dynamic conditions.

Keywords:

streak tube streak tube lidar (STIL)three-dimensional (3D) reconstruction ultrafast imaging

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Area of Science:

Optics and Photonics
Laser Technology
3D Imaging

Background:

Streak cameras are crucial for high-temporal-resolution diagnostics in laser-driven inertial confinement fusion.
Flash LiDAR technology, like STIL, provides high spatiotemporal resolution, precise ranging, and enhanced sensitivity.

Purpose of the Study:

To establish a theoretical model for the STIL system.
To predict and experimentally validate the temporal and spatial resolution limits of STIL.
To demonstrate STIL's capability for high-frame-rate, high-resolution 3D imaging.

Main Methods:

Developed a theoretical model and conducted numerical simulations of the STIL system.
Built and calibrated an experimental STIL platform.
Utilized feature extraction and neural network-based algorithms for 3D reconstruction from time-of-flight data.

Main Results:

Numerical simulations predicted temporal and spatial resolutions of ~6 ps and 22.8 lp/mm.
Experimental calibration yielded a temporal resolution of 14.47 ps and spatial resolution of 20 lp/mm.
Achieved a minimum distance reconstruction error of 3.57% and demonstrated detection of fast, low-intensity optical signals.

Conclusions:

The STIL system demonstrates significant potential for micron-scale depth discrimination under dynamic conditions.
Validated STIL's capability for high-frame-rate, high-resolution 3D imaging.
STIL technology is a promising solution for advanced imaging applications requiring precise range information.