Abstract
We demonstrate optical manipulation with an optical beam generated by a fractral zone plate (FZP). The experimental results show that the FZP beam can simultaneously trap multiple particles positioned in different focal planes of the FZP beam, owing to the multiple foci and self-reconstruction property of the FZP beam. The FZP beam can also be used to construct three-dimensional optical tweezers for potential applications.
Highlights
We demonstrate optical manipulation with an optical beam generated by a fractral zone plate (FZP)
As focal lengths of multiple foci provided by an FZP beam are determined by the structural parameters of the FZP, the axial distances between adjacent foci of the beam can be finely controlled with a fractional number of the segments of the fractal structure[25]
FZPs can be constructed from conventional Fresnel zone plates in some cases
Summary
We demonstrate optical manipulation with an optical beam generated by a fractral zone plate (FZP). The Bessel beams and the Airy beams were used to simultaneously trap multiple particles[12,19,20,21], but positions of the trapped particles in 3D space could not be customized owing to the non-diffracting intensity profiles of the beams in the propagation direction. Athough optical trapping with a beam generated by the Devil’s lens characterized with a fractal structure was realized[27], the simultaneous manipulation of particles at different axial positions has not been reported. The unique diffraction property of the FZP beam such as the self-reconstruction is critical for the realization of the 3D manipulation, so the main focus and the surrounding subsidiary foci of the FZP beam can be used to separately trap and manipulate particles at different positions in 3D space
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
