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Related Experiment Video

Updated: Jun 16, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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Stable multipass Fabry-Perot interferometer: design and analysis.

C Roychoudhuri, M Hercher

    Applied Optics
    |February 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a multipass plane parallel Fabry-Perot interferometer (FPP-M) offering high contrast and transmission. A stable, passive design using Cer-Vit material ensures long-term performance without active control.

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    Area of Science:

    • Optics and Photonics
    • Spectrometry
    • Interferometry

    Background:

    • High-contrast interferometers are crucial for advanced spectroscopic applications.
    • Existing Fabry-Perot interferometers often face limitations in contrast, transmission, or stability.
    • The multipass plane parallel Fabry-Perot interferometer (FPP-M) offers a potential solution.

    Purpose of the Study:

    • To analyze the performance of a multipass plane parallel Fabry-Perot interferometer (FPP-M).
    • To provide guidance for selecting optimal parameters for spectrometric work using FPP-M.
    • To develop a stable, passive FPP-M design for long-term use.

    Main Methods:

    • Theoretical analysis of FPP-M performance, including Chabbal's analysis for mirror defects.
    • Development of performance curves and tables for parameter assessment.
    • Construction of a passive interferometer using low thermal expansion Cer-Vit material.
    • Implementation of non-kinematic design and thermally compensated mirror mounts for stability.

    Main Results:

    • The FPP-M achieves extremely high contrast (exceeding 10^6) across a broad finesse range.
    • Significant transmission is maintained even at high contrast levels.
    • The passive design demonstrates long-term stability without servo control, validated by material choice and mechanical design.

    Conclusions:

    • The multipass plane parallel Fabry-Perot interferometer (FPP-M) is a highly effective tool for high-contrast spectrometry.
    • Careful consideration of mirror defects and parameter optimization is essential for maximizing FPP-M performance.
    • A passively stabilized FPP-M, constructed with low thermal expansion materials and advanced mechanical design, offers a robust solution for demanding applications.