Fourier hybrid circular Airy vortex beam

Area of Science:

• Optics and Photonics
• Beam Physics

Background:

• Circular Airy vortex beams (CAVB) are known for their unique propagation dynamics.
• Controlling and generating these beams efficiently is crucial for advanced optical applications.

Purpose of the Study:

• To synthesize a Fourier hybrid circular Airy vortex beam (FHCAVB) as a high-fidelity approximation of the CAVB.
• To investigate the properties and generation methods of the FHCAVB.

Main Methods:

• The FHCAVB was synthesized in the Fourier domain by combining the phase profile of CAVB with a Gaussian amplitude distribution.
• Experimental generation was achieved using a phase-only spatial light modulator (SLM) in a Fourier transform setup.

Main Results:

• The FHCAVB successfully retained key properties of the CAVB, including controllability.
• Enhanced autofocusing contrast was observed in the FHCAVB.
• Experimental results closely matched theoretical simulations.

Conclusions:

• The FHCAVB serves as an efficient and high-fidelity approximation of the CAVB.
• This method facilitates the generation of autofocusing Airy (AAF) vortex beams.
• The FHCAVB has significant potential for applications in optical trapping, tweezing, and communications.