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Updated: May 23, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Generalized data reduction approach for aspheric testing in a non-null interferometer.

Chao Tian¹, Yongying Yang, Yongmo Zhuo

¹State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China.

|April 17, 2012

Summary

This summary is machine-generated.

We present a new data reduction method for aspheric testing using non-null interferometers. This approach simplifies figure error calculation by subtracting theoretical and first-order errors from measured wavefront data.

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Last Updated: May 23, 2026

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Area of Science:

Optical Engineering
Metrology
Interferometry

Background:

Data reduction in non-null interferometry is challenging due to retrace errors.
Accurate testing of aspheric surfaces is critical in optical manufacturing.

Purpose of the Study:

To develop a simple and effective data reduction method for aspheric testing in non-null interferometers.
To address the challenges posed by retrace error in optical metrology.

Main Methods:

Proposing a novel data reduction approach for aspheric surface testing.
Calculating aspheric figure error by subtracting theoretical wavefront and first-order errors from measured data.
Achieving precise theoretical wavefront prediction via accurate partial compensation system calibration.

Main Results:

Demonstrated the validity and feasibility of the proposed data reduction method through experiments.
The method provides a straightforward way to obtain aspheric figure error.

Conclusions:

The developed approach offers a significant advancement in non-null interferometric testing of aspheres.
This method generalizes traditional data processing techniques used in null tests.