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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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Related Experiment Video

Updated: Jun 15, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Published on: October 11, 2016

Radial grating lateral shear heterodyne interferometer.

C L Koliopoulos

    Applied Optics
    |March 12, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new variable lateral shear heterodyne interferometer measures high-bandwidth wavefronts for adaptive optics. This innovative system successfully compensated for atmospheric turbulence in real-time applications.

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    Last Updated: Jun 15, 2026

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    Area of Science:

    • Optical Engineering
    • Adaptive Optics

    Background:

    • Adaptive optical systems require precise wavefront measurement.
    • High-bandwidth wavefront sensing is crucial for dynamic compensation.

    Purpose of the Study:

    • To develop a variable lateral shear heterodyne interferometer.
    • To enable high-bandwidth wavefront measurement for adaptive optics.

    Main Methods:

    • Utilized a variable lateral shear heterodyne interferometer.
    • Integrated a radial Ronchi grating for wavefront analysis.
    • Employed various spatially and temporally coherent light sources, including whitelight.

    Main Results:

    • Successfully measured high-bandwidth wavefronts.
    • Demonstrated operation with diverse light sources.
    • Achieved successful real-time atmospheric compensation in an adaptive optical system.

    Conclusions:

    • The developed interferometer is effective for high-bandwidth wavefront sensing.
    • It is suitable for real-time adaptive optics, including atmospheric compensation.