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Related Experiment Video

Updated: Jun 23, 2026

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

Optical tweezers with multiple optical forces using double-hologram interference.

Woei Ming Lee, X Yuan, D Tang

    Optics Express
    |May 23, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers demonstrate novel optical tweezers using Laguerre-Gaussian (LG) and Gaussian beam interference. This advancement enables simultaneous transfer of orbital angular momentum, spin angular momentum, and optical gradient force to microparticles.

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    Last Updated: Jun 23, 2026

    Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
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    Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

    Published on: April 22, 2013

    Area of Science:

    • Optics and Photonics
    • Atomic, Molecular and Chemical Physics

    Background:

    • Laguerre-Gaussian (LG) beams are utilized in advanced optical tweezers for manipulating 3D structures.
    • Previous work introduced methods for generating interference patterns from LG beams.

    Purpose of the Study:

    • To demonstrate, for the first time, interference between double LG beams and LG beams with Gaussian beams.
    • To showcase the capability of observing LG interference with unequal azimuthal charges using two holograms.

    Main Methods:

    • Utilized a Michelson interferometer for beam interference.
    • Employed two holograms to generate and observe LG interference patterns.

    Main Results:

    • Successfully demonstrated interference between double LG and LG beams with Gaussian beams.
    • Observed LG interference patterns with unequal azimuthal charges.

    Conclusions:

    • Introduced a novel type of optical tweezers capable of simultaneous transfer of orbital angular momentum, spin angular momentum, and optical gradient force.
    • This new optical tweezer technology offers significant opportunities for studying force interactions within a single laser beam.