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Related Experiment Video

Updated: Nov 1, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Solid-state FMCW LiDAR with two-dimensional spectral scanning using a virtually imaged phased array.

Zhi Li, Zihan Zang, Yaqi Han

|June 22, 2021

Summary

This summary is machine-generated.

This study introduces a novel solid-state LiDAR system using a virtually imaged phased array (VIPA) for 2D beam steering. It achieves high-resolution 3D imaging and ranging with a compact, dispersion-based design.

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Last Updated: Nov 1, 2025

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Published on: January 28, 2019

Area of Science:

Optics and Photonics
LiDAR Technology
3D Imaging Systems

Background:

Solid-state beam-steering is crucial for robust and fast LiDAR systems.
Achieving 2D scanning in solid-state devices like optical phased arrays (OPAs) is a significant challenge.
Existing methods often face limitations in complexity or performance for 2D scanning.

Purpose of the Study:

To develop an all solid-state 2D beam-steering LiDAR system.
To leverage dispersion-based scanning for simplified and compact device design.
To enable simultaneous 2D beam steering and optical frequency-modulated continuous-wave (FMCW) ranging.

Main Methods:

Implementation of a virtually imaged phased array (VIPA) as the core 2D beam-steering component.
Utilizing a frequency-swept laser source for FMCW ranging and beam steering.
Employing a 2D disperser for dispersion-only beam manipulation.

Main Results:

Achieved a lateral resolution of 0.06° due to continuous scanning and ranging.
Generated 3D maps of objects at 2m distance with centimeter-level ranging precision.
Demonstrated a compact and easily implementable 2D disperser design.

Conclusions:

The proposed VIPA-based LiDAR system offers a viable solution for all solid-state 2D beam steering.
The system's frame rate is dependent on laser wavelength-tuning speed, enabling potential for ultrafast operation.
This approach simplifies LiDAR system design while maintaining high performance in 3D imaging and ranging.