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Updated: Jul 7, 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

Optimization of a field-widened Michelson interferometer.

W A Gault¹, S F Johnston, D J Kendall

¹York University, Centre for Research in Experimental Space Science, Toronto, M3J 1P3.

|June 1, 1985

Summary

This summary is machine-generated.

This study optimizes a wide-angle Michelson interferometer for enhanced fringe visibility and wavelength-independent path differences. The design is suitable for applications like airglow observation using specific wavelengths.

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Area of Science:

Optics and Photonics
Interferometry
Optical Design

Background:

Michelson interferometers are crucial for optical measurements.
Wide-angle designs present challenges in maintaining fringe quality and path difference stability.
Optimizing optical elements is key for advanced interferometric applications.

Purpose of the Study:

To design and optimize a wide-angle, fixed-path Michelson interferometer.
To achieve specific optical performance characteristics, including large fringe diameters and controlled path differences.
To explore the suitability of this design for spectroscopic observations, particularly for airglow studies.

Main Methods:

Investigated optical design principles for a Michelson interferometer with two arm glasses and an air gap.
Analyzed configurations for optimizing fringe characteristics and path difference behavior across wavelengths.
Considered specific glass combinations and their impact on performance.

Main Results:

Demonstrated the possibility of achieving extra-large fringes (over 50 degrees) across a range of wavelengths.
Showed that the path difference can be made nearly independent of wavelength.
Enabled a path difference specified differently at two wavelengths for observing doublets.
Evaluated performance for airglow wavelengths (e.g., 557.7, 630.0, 732.0 nm) with a 4.5 cm path difference.

Conclusions:

The proposed wide-angle fixed-path Michelson interferometer design offers significant advantages for optical measurements.
Optimized configurations provide flexibility in fringe characteristics and path difference control.
The design is well-suited for precise spectroscopic analysis of phenomena like airglow.