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Vortex array generation by interference of spherical waves.

Sunil Vyas1, P Senthilkumaran

  • 1Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India. sunilk_vyas@yahoo.com

Applied Optics
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Summary
This summary is machine-generated.

Interfering three spherical waves creates vortex lattices, mimicking plane wave interference. This novel method offers a new approach to generating optical vortex lattices using spherical wavefronts.

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Area of Science:

  • Optics and Photonics
  • Wave Phenomena
  • Light Manipulation

Background:

  • Vortex generation is crucial for applications in optical trapping, microscopy, and quantum information.
  • Traditional vortex generation often relies on the interference of multiple plane waves.
  • Exploring alternative wavefronts for vortex generation can offer new possibilities.

Purpose of the Study:

  • To demonstrate the generation of vortex lattices using spherical wave interference.
  • To compare the results with those obtained from plane wave interference.
  • To investigate the feasibility of using Mach-Zehnder interferometry for spherical wave vortex generation.

Main Methods:

  • Utilizing a Mach-Zehnder interferometer with a shear configuration.
  • Interfering three spherical waves with identical curvature.
  • Analyzing the resulting interference patterns to identify vortex lattice formation.

Main Results:

  • Spherical wave interference successfully produced vortex lattices.
  • The generated vortex lattices exhibit similarities to those from three-beam plane wave interference.
  • The experimental setup in a Mach-Zehnder configuration proved effective.

Conclusions:

  • Spherical wave interference is a viable method for generating optical vortex lattices.
  • This technique provides an alternative to plane wave-based methods.
  • The findings open avenues for new optical vortex generation strategies.