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Optical twin-vortex multi-trapping by Kolakoski lenses.

Arlen B Perez-Hernández1, Adrián Garmendía-Martínez1, Walter D Furlan2

  • 1Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022, Valencia, Spain.

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|November 5, 2024
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Summary
This summary is machine-generated.

This study introduces the Kolokaski Kinoform Spiral Lens (KKSL), a novel optical element for optical tweezers. The KKSL generates controllable twin optical vortices, enabling advanced particle manipulation and multiple trapping applications.

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Area of Science:

  • Optics and Photonics
  • Optical Engineering
  • Soft Matter Physics

Background:

  • Optical tweezers are crucial for manipulating microscopic particles.
  • Generating multiple, controllable optical traps remains a challenge.
  • Diffractive optical elements offer versatile beam shaping capabilities.

Purpose of the Study:

  • To design and implement a novel bifocal diffractive spiral lens for optical tweezers.
  • To investigate the generation of twin optical vortices with tunable properties.
  • To demonstrate the application of this lens in advanced optical trapping.

Main Methods:

  • Design of a Kolokaski Kinoform Spiral Lens (KKSL) incorporating the Kolakoski aperiodic sequence.
  • Characterization of the focusing properties and vortex generation of the KKSL.
  • Integration of the KKSL into an optical tweezer system for experimental validation.

Main Results:

  • The KKSL successfully generates twin optical vortices along the propagation direction.
  • Axial positions and diameters of the vortex beams are controllable via the Kolakoski sequence.
  • Experimental demonstration of independent multiple particle trapping and displacement within each vortex beam.

Conclusions:

  • The KKSL is a powerful tool for advanced optical trapping applications.
  • This technology enables precise control over multiple particle manipulation.
  • The KKSL design offers a new paradigm for complex optical vortex generation.