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Related Experiment Video

Updated: Jun 10, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Multilevel computer-generated holograms with separable phase functions for beam shaping.

N C Roberts

    Applied Optics
    |August 21, 2010
    PubMed
    Summary
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    Researchers converted laser beam profiles from Gaussian to uniform rectangular shapes using computer-generated holograms. This method offers precise control over laser beam shaping for various applications.

    Area of Science:

    • Optics and Photonics
    • Holography
    • Laser Beam Shaping

    Background:

    • Laser beams often exhibit a Gaussian intensity profile, which is unsuitable for applications requiring uniform illumination.
    • Existing methods for beam shaping can be complex or inefficient.

    Purpose of the Study:

    • To demonstrate a novel method for converting a Gaussian laser beam profile into a uniform rectangular profile.
    • To investigate the use of computer-generated holograms (CGHs) for laser beam transformation.

    Main Methods:

    • Utilized an on-axis pair of multilevel computer-generated holograms.
    • Designed CGHs to precisely manipulate the phase of the laser beam.
    • Experimentally verified the intensity profile of the transformed beam.

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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    Related Experiment Videos

    Last Updated: Jun 10, 2026

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
    09:33

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

    Published on: June 7, 2019

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    Main Results:

    • Successfully converted the Gaussian beam profile to a rectangular profile with uniform intensity.
    • The on-axis configuration simplified the optical setup.
    • The multilevel CGH design allowed for efficient beam shaping.

    Conclusions:

    • Computer-generated holograms provide an effective solution for transforming laser beam profiles.
    • This technique enables the generation of uniform rectangular laser beams for advanced optical systems.