Construction of double-ring perfect vortex beams through strongly scattering media with full vector transmission...

Area of Science:

• Optics
• Photonics
• Wave Phenomena

Background:

• Double-ring perfect vortex beams (DR-PVBs) offer unique properties for optical applications.
• Wavefronts of DR-PVBs are susceptible to significant distortion when propagating through strongly scattering media (SSM).

Purpose of the Study:

• To propose and demonstrate a novel method for reconstructing DR-PVBs transmitted through SSM.
• To enable independent control over topological charge, radius, amplitude, and polarization for each ring of the DR-PVBs.

Main Methods:

• Utilizing full vector transmission matrix-based vector point spread function (VTM-VPSF) engineering.
• Computing a VTM-based operator via spatial filtering and a vector filtering mask in the Fourier domain.
• Employing digital optical phase conjugation (DOPC) to generate orthogonal input wavefronts.

Main Results:

• Successfully reconstructed DR-PVBs through SSM with independently controllable parameters for each ring.
• Demonstrated the formation of petal-like intensity patterns by adjusting ring sizes and topological charges.
• Achieved robust reconstruction of DR-PVBs despite wavefront distortions.

Conclusions:

• The proposed VTM-VPSF engineering method effectively reconstructs DR-PVBs in scattering media.
• This technique enhances the potential for optical manipulation and communication applications of DR-PVBs in complex environments.
• The ability to form novel intensity patterns expands the utility of DR-PVBs.