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Updated: Jun 22, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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Stretchable diffraction gratings for spectrometry.

Aleksey N Simonov, Semen Grabarnik, Gleb Vdovin

    Optics Express
    |June 24, 2009
    PubMed
    Summary
    This summary is machine-generated.

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    Transparent stretchable diffraction gratings enable scanning spectrometers. Grating deformation limits spectral resolution, primarily due to astigmatism from wedge deformation, impacting spectrometric applications.

    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Spectroscopy

    Background:

    • Traditional spectrometers often rely on fixed gratings, limiting tunability.
    • Developing adaptable optical components is crucial for advanced spectroscopic instrumentation.

    Purpose of the Study:

    • To explore the use of transparent, stretchable diffraction gratings for tunable spectrometry.
    • To model and analyze the impact of grating deformation on spectral resolution.

    Main Methods:

    • Fabrication of stretchable diffraction gratings via replication into viscoelastic materials.
    • Integration of gratings into a monochromator setup to create a scanning spectrometer.
    • Characterization of spectral resolution and wave-front aberrations using a Shack-Hartmann sensor.

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    Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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    Main Results:

    • Stretchable gratings successfully converted a monochromator into a scanning spectrometer.
    • Spectral resolution was limited by wave-front aberrations, particularly astigmatism, caused by grating deformation.
    • A resolution of ~1.2 nm (full-width at half-maximum) was achieved in the 580-680 nm range with slow stretching.

    Conclusions:

    • Transparent stretchable diffraction gratings are viable for spectrometric applications.
    • Grating deformation-induced aberrations, especially astigmatism, are key factors limiting spectrometer resolution.
    • Further optimization of grating design and stretching mechanisms can enhance performance for advanced spectroscopy.