Generation of perfect vortex and vector beams based on Pancharatnam-Berry phase elements

Area of Science:

• Optics and Photonics
• Quantum Information Science

Background:

• Perfect vortex beams carry orbital angular momentum (OAM) and offer advantages over traditional Laguerre-Gaussian beams.
• Existing methods for generating perfect vortex beams are often bulky and unstable, limiting their practical application.

Purpose of the Study:

• To demonstrate a novel, compact, and stable generation scheme for perfect vortex beams.
• To utilize planar Pancharatnam-Berry (PB) phase elements for efficient beam generation.
• To explore the potential for generating perfect vector beams using the proposed PB phase element scheme.

Main Methods:

• Designing and implementing planar Pancharatnam-Berry (PB) phase elements.
• Replacing conventional bulky optical elements with compact PB phase elements.
• Investigating the generation of perfect vector beams using the PB phase element approach.

Main Results:

• Successfully generated perfect vortex beams using a novel scheme based on PB phase elements.
• Significantly reduced the system's occupying volume compared to traditional methods.
• Demonstrated the adaptability of the PB phase element scheme for producing perfect vector beams.

Conclusions:

• The proposed PB phase element scheme offers a compact and stable method for generating perfect vortex beams.
• This novel approach facilitates the development of prominent vortex and vector sources.
• The technology shows promise for integrated optical communication and micromanipulation systems.