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Related Experiment Video

Updated: Sep 11, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping partially coherent light by the coherent mode decomposition.

Quang Nguyen, Kevin Liang, Nick Vamivakas

    Optics Express
    |August 13, 2025
    PubMed
    Summary

    This study introduces coherent mode decomposition (CMD) to engineer partially coherent light. CMD allows using established coherent light techniques for arbitrary field control with these common light sources.

    Area of Science:

    • Optics and Photonics
    • Quantum Optics
    • Microscale Light Manipulation

    Background:

    • Coherence properties of light are crucial for modulation, with partially coherent light requiring special attention.
    • Microscale light manipulation platforms like photonic crystals, plasmonics, and metasurfaces often assume spatially coherent input.
    • Existing methods for shaping partially coherent light have limited arbitrary field engineering capabilities.

    Purpose of the Study:

    • To explore coherent mode decomposition (CMD) as a method for treating partially coherent light sources.
    • To enable the application of coherent design techniques to partially coherent light.
    • To determine the coherence degree threshold where CMD becomes essential.

    Main Methods:

    • Utilizing coherent mode decomposition (CMD) to analyze partially coherent light.

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  • Applying coherent design principles to the modes obtained from CMD.
  • Generating a hologram from a partially coherent source using the CMD framework.
  • Quantifying the degree of coherence for technique efficacy.

    • Main Results:

    • Demonstrated the feasibility of using CMD to engineer partially coherent light fields.
    • Showcased the creation of a hologram from a partially coherent source.
    • Identified the specific degree of coherence at which the CMD technique is most critical.

    Conclusions:

    • Coherent mode decomposition (CMD) provides a powerful framework for manipulating partially coherent light.
    • CMD bridges the gap between established coherent light design and the practical use of partially coherent sources.
    • This approach expands the toolkit for arbitrary field engineering with common light sources.