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Updated: Jul 7, 2026
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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.
Applied Optics
|June 1, 1985
Summary
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.
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.
