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A spectral line discriminator interferometer: an analysis.

C T Foskett, J M Weinberg

    Applied Optics
    |January 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study analyzes the Michelson spectral line discriminator interferometer (SLDI) as a linear device. It examines background suppression and proposes an iterative method for spectral line analysis.

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    Area of Science:

    • Spectroscopy
    • Optical Interferometry
    • Signal Processing

    Background:

    • The Michelson spectral line discriminator interferometer (SLDI) is a field-compensated instrument used for spectral analysis.
    • Understanding its performance in the presence of background continua and signal stability is crucial for accurate spectral measurements.

    Purpose of the Study:

    • To analyze the Michelson spectral line discriminator interferometer (SLDI) as a linear device.
    • To investigate the instrument's capability in measuring spectral discontinuities amidst strong background signals.
    • To evaluate signal harmonic distribution and stability for improved spectral analysis.

    Main Methods:

    • Treating the SLDI as a linear device for analysis.
    • Examining spectral discontinuity measurement with strong background continua.
    • Analyzing signal harmonic distribution and stability.
    • Introducing a figure of merit E(s) for background suppression efficiency.
    • Presenting equations for analytic line shapes.
    • Suggesting an iterative solution for determining line intensities and widths.

    Main Results:

    • The SLDI's performance as a linear device is characterized.
    • Background suppression efficiency is quantified using the figure of merit E(s).
    • Equations for analyzing various spectral line shapes are derived.
    • An iterative method for spectral line determination is proposed and validated.

    Conclusions:

    • The study provides a comprehensive analysis of the SLDI's capabilities and limitations.
    • The proposed iterative method ensures convergence for spectral line analysis, particularly for complex line shapes like two Lorentz lines.
    • This work offers a framework for optimizing SLDI performance in challenging spectral environments.