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Updated: Sep 20, 2025

Simultaneously Capturing Real-time Images in Two Emission Channels Using a Dual Camera Emission Splitting System: Applications to Cell Adhesion

Simultaneously Capturing Real-time Images in Two Emission Channels Using a Dual Camera Emission Splitting System: Applications to Cell Adhesion

Published on: September 4, 2013

Dual chirped microcomb based parallel ranging at megapixel-line rates.

Anton Lukashchuk¹, Johann Riemensberger², Maxim Karpov¹

¹Laboratory of Photonics and Quantum Measurements (LPQM), Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland.

Nature Communications

|June 7, 2022

Summary

Researchers developed a new coherent laser ranging (LiDAR) technique using a swept dual-soliton microcomb. This method achieves megapixel per second rates for simultaneous distance and velocity measurements, overcoming previous speed limitations in LiDAR technology.

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Area of Science:

Photonics
Optical Metrology
Sensor Technology

Background:

Laser-based ranging (LiDAR) is crucial for industrial monitoring, atmospheric dynamics, and geodesy.
Coherent laser ranging offers advantages over time-of-flight methods, including immunity to ambient light and simultaneous velocity/distance data.
Current LiDAR systems sample at kilopixel/sec, insufficient for emerging applications like autonomous driving and robotics demanding megapixel/sec rates.

Purpose of the Study:

To develop a high-speed coherent laser ranging system capable of megapixel per second sampling rates.
To overcome the complexity of photonic integration challenges in parallelized microcomb-based LiDAR.
To enable real-time video-rate imaging for advanced applications through faster LiDAR acquisition.

Main Methods:

A hardware-efficient swept dual-soliton microcomb technique was employed.
Two synchronously frequency-modulated microcombs were multiheterodyned.
A single receiver was used for all optical channels, eliminating the need for individual channel separation and digitization.

Main Results:

Achieved coherent ranging and velocimetry at megapixel per second line scan measurement rates.
Supported up to 64 parallel optical channels using a single receiver.
Demonstrated a significant increase in acquisition speed compared to state-of-the-art systems.

Conclusions:

The swept dual-soliton microcomb technique successfully enables high-speed coherent LiDAR.
This approach alleviates photonic integration complexity by using a single receiver for multiple channels.
The technology is compatible with photonic integration and highlights the synergy between optical telecommunications and metrology.