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Related Experiment Videos

Programmable light source based on an echellogram of a supercontinuum laser.

Ding Luo, Miro Taphanel, Thomas Längle

    Applied Optics
    |April 5, 2017
    PubMed
    Summary
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    This study introduces a programmable light source using a prism and echelle grating for tunable visible light. It achieves precise spectral peaks with 1 nm FWHM and 0.01 nm resolution.

    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Instrumentation

    Background:

    • Tunable spectrum illumination systems are crucial for diverse applications.
    • Programmable light sources offer advanced control over light properties.

    Purpose of the Study:

    • To propose and demonstrate a novel programmable light source in the visible spectrum.
    • To achieve high spectral resolution and precise wavelength control.

    Main Methods:

    • Utilized a supercontinuum laser as the primary light source.
    • Employed a prism and echelle grating for spectral dispersion.
    • Implemented a digital mirror device for wavelength selection.
    • Developed a comprehensive calibration procedure for target spectrum generation.

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    Main Results:

    • Successfully generated spectral peaks with a full width at half-maximum (FWHM) of 1 nm.
    • Achieved a wavelength tuning resolution as fine as 0.01 nm.
    • Demonstrated the capability to generate arbitrary target spectra.

    Conclusions:

    • The proposed system offers a versatile and high-resolution programmable light source.
    • This technology has potential applications in spectroscopy, imaging, and optical testing.