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Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

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Laser coarse-fine coupling scanning method by steering double prisms.

Anhu Li¹, Xuchun Jiang, Jianfeng Sun

¹College of Mechanical Engineering, Tongji University, 4800 Caoan Road, Shanghai, 201804, China. yfliah@yahoo.com.cn

|January 25, 2012

Summary

This summary is machine-generated.

A novel cascaded double-prism scanner offers high-accuracy scanning for dynamic targets in optical communication systems. This innovative device achieves superior scanning resolution and accuracy for both coarse and fine adjustments.

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Area of Science:

Optics and Photonics
Optical Engineering
Mechanical Engineering

Background:

Optical communication systems require advanced scanning for dynamic targets.
Conventional scanners face limitations in resolution and accuracy due to fixed parameters.
There is an emerging need for high-precision scanning solutions.

Purpose of the Study:

To introduce a novel cascaded double-prism scanner.
To combine rotating and tilting motions for enhanced scanning capabilities.
To address the limitations of conventional scanners in dynamic target tracking.

Main Methods:

Development of a nested device integrating rotating and tilting prism scanning modes.
Analysis of scanning performance for both coarse and fine scanning ranges.
Evaluation of scanning accuracy and field angle ranges.

Main Results:

Coarse scanning: vertical and horizontal field angle ranges ≥ ±10°, accuracy > 50 μrad.
Fine scanning: vertical range ≥ 2500 μrad, horizontal range ≥ 1200 μrad, accuracy > 1 μrad.
The scanner enables collaborative beam steering over a large range with high accuracy.

Conclusions:

The cascaded double-prism scanner meets requirements for high-accuracy dynamic target tracking.
The device offers versatile scanning modes and trajectories.
This technology holds significant engineering value for precise beam steering applications.