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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Design and evaluation of laser sources with high-quality wave fronts
Applied Optics
|August 19, 2010
Summary
Two novel laser sources with high-quality wave fronts were developed for precise optical system testing. These sources minimize aberrations, enabling accurate characterization of unknown optical systems and interferometers.
Area of Science:
- Optical Engineering
- Metrology
- Laser Physics
Background:
- Accurate characterization of optical systems requires high-quality reference wave fronts.
- Existing laser sources may introduce aberrations, limiting testing precision.
Purpose of the Study:
- To design and evaluate novel laser sources with minimal wave-front aberrations.
- To provide reliable reference sources for optical system testing and characterization.
Main Methods:
- Development of a collimated reference source with <0.01 wave rms irregularity.
- Development of a point reference source with <0.01 wave rms irregularity.
- Characterization using fourth-order wave-front polynomial coefficients and wave-front sensing interferometry.
Main Results:
- Collimated source: <0.01 wave rms irregularity, <0.067 wave peak to valley collimation.
- Point source: <0.01 wave rms (NA 0.60) and <0.005 wave rms (NA 0.35) irregularity.
- Demonstrated use in evaluating a Mach-Zehnder interferometer.
Conclusions:
- The developed laser sources provide highly accurate, well-characterized wave fronts.
- These sources enable precise testing and complete characterization of unknown optical systems.
- Applications range from general laboratory use to advanced optical metrology.
