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Updated: May 13, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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Published on: July 18, 2015

Distorted Dammann grating.

Junjie Yu¹, Changhe Zhou, Wei Jia

¹Laboratory of Information Optics and Optoelectronics Techniques, Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800-211, Shanghai 201800, China.

|March 5, 2013

Summary

This summary is machine-generated.

We developed a distorted Dammann grating (DDG) for multiplane imaging, enabling high axial resolution and a large imaging range without scanning. This technology offers potential for real-time 3D optical imaging and tracking applications.

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Area of Science:

Optics and Photonics
3D Imaging Technologies
Microscopy

Background:

Multiplane imaging techniques are crucial for capturing volumetric information in a single snapshot.
Traditional methods often require mechanical scanning, limiting real-time applications.
Phase-encoding methods offer potential for advanced optical system design.

Purpose of the Study:

To introduce a novel distorted Dammann grating (DDG) for simultaneous multiplane imaging.
To achieve high axial resolving power and a large axial imaging range without scanning.
To explore the potential of DDGs for real-time 3D optical imaging and tracking.

Main Methods:

Incorporating the Dammann phase-encoding method into original distorted gratings.
Designing and fabricating a modified distorted grating, termed a distorted Dammann grating (DDG).
Experimental demonstration of multiplane imaging using a 7x7 DDG with an objective of NA=0.127.

Main Results:

Successfully realized multiplane imaging of 7x7 object layers onto a single image plane.
Demonstrated simultaneous high axial resolving power and a large axial imaging range.
Validated the effectiveness of the DDG for capturing multiple layers in one shot.

Conclusions:

The distorted Dammann grating (DDG) is a promising approach for advanced multiplane imaging.
DDGs enable high-performance 3D imaging without the need for scanning.
This technology holds significant potential for real-time optical imaging and tracking applications.