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Updated: Jun 15, 2026
07:22
Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
Etalon-spectrograph system for improved resolution over a wide spectral range.
Applied Optics
|March 18, 2010
Summary
This study presents a novel spectral analysis system combining a scanning Fabry-Perot étalon with a diffraction grating spectrograph. This system achieves high-resolution spectral reproduction with digital output via a vidicon tube.
Area of Science:
- Optical Physics
- Spectroscopy
- Instrumentation
Background:
- Fabry-Perot étalons are crucial for high-resolution spectroscopy.
- Diffraction grating spectrographs offer broad spectral coverage.
- Integrating these instruments can enhance spectral analysis capabilities.
Purpose of the Study:
- To develop a hybrid spectral analysis system.
- To achieve high spectral resolution and digital output.
- To explore the capabilities of a scanning Fabry-Perot étalon coupled with a spectrograph.
Main Methods:
- Imaging Airy patterns from a scanning Fabry-Perot étalon onto a spectrograph's entrance slit.
- Dispersing light with the spectrograph.
- Imaging dispersed light onto a 500-channel vidicon tube for digital data acquisition.
Main Results:
- The system successfully images spectral information.
- Scanning the étalon reproduces the spectrograph's displayed region.
- Achieved spectral reproduction with resolution close to the étalon's limit.
Conclusions:
- The combined system offers a viable method for high-resolution spectral analysis.
- Digital output facilitates data processing and interpretation.
- This approach enhances the capabilities of traditional spectroscopic techniques.
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