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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.
Scientific Reports
|November 5, 2024
Summary
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.
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.
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