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Generating optical superimposed vortex beam with tunable orbital angular momentum using integrated devices.

Yu Wang1, Xue Feng1, Dengke Zhang1

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Summary
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This study introduces a novel device for superposing optical vortex beams, enabling dynamic tuning of orbital angular momentum (OAM). Experimental results confirm the device

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Area of Science:

  • Optics and Photonics
  • Quantum Information Science

Background:

  • Optical vortex beams carry orbital angular momentum (OAM).
  • Superposition of vortex beams is crucial for advanced optical applications.
  • Current methods for controlling OAM during superposition can be limited.

Purpose of the Study:

  • To propose and demonstrate an integrated device for dynamically tuning the OAM of superimposed optical vortex beams.
  • To enable independent control over OAM flux and intensity distribution.
  • To explore the potential of this technology in various applications.

Main Methods:

  • Design and fabrication of an integrated device comprising a variable amplitude splitter and an OAM emitter.
  • Experimental verification of the device's operating principle using fabricated samples.
  • Numerical simulations to illustrate independent control of OAM flux and intensity.

Main Results:

  • The fabricated device successfully superposes optical vortex beams.
  • Experimental measurements confirm the dynamic tunability of the OAM of the superimposed beam.
  • Numerical simulations show independent control over OAM flux and intensity distribution.

Conclusions:

  • The proposed integrated device offers a novel method for dynamically controlling the OAM of superimposed optical vortex beams.
  • This technology holds promise for applications requiring precise manipulation of light properties.
  • The ability to independently tune OAM and intensity distribution enhances its versatility.