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Related Concept Videos

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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Related Experiment Video

Updated: Jun 12, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Coherence length measured directly by holography.

R F Wuerker, J Munch, L O Heflinger

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

    A new holographic method accurately measures a pulsed laser

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    Last Updated: Jun 12, 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

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    10:16

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

    Published on: February 8, 2014

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Quantum Optics

    Background:

    • Accurate measurement of temporal coherence is crucial for laser applications.
    • Conventional methods struggle with complex spectral content.
    • Pulsed lasers require specialized coherence measurement techniques.

    Purpose of the Study:

    • To introduce a novel holographic method for direct temporal coherence measurement.
    • To provide a technique applicable to single laser pulses.
    • To overcome limitations of existing methods for complex laser spectra.

    Main Methods:

    • Holographic interferometry
    • Single-pulse analysis
    • Direct measurement of the temporal coherence function

    Main Results:

    • The holographic method directly measures the complete temporal coherence function.
    • The technique is effective for pulsed lasers, even with complex spectral content.
    • Achieved accurate coherence length determination where conventional methods fail.

    Conclusions:

    • The presented holographic method offers a straightforward and accurate approach to temporal coherence measurement.
    • This technique is particularly advantageous for pulsed lasers with intricate spectral characteristics.
    • It provides a valuable tool for laser characterization and development.