Dynamic control of cylindrical vector beams via anisotropy

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Cylindrical vector beams exhibit unique spatial properties.
• Controlling light beam diffraction is crucial for optical applications.
• Anisotropic crystals offer tunable optical responses.

Purpose of the Study:

• To investigate the control of cylindrical vector beam diffraction using anisotropic crystals.
• To demonstrate the suppression and enhancement of beam diffraction.
• To achieve non-spreading vector beams and control Airy beam propagation dynamics.

Main Methods:

• Experimental investigation of light-matter interaction.
• Utilizing anisotropic crystals with varying anisotropy signs.
• Propagation dynamics analysis of cylindrical vector and Airy vector beams.

Main Results:

• Diffraction of vector beams can be significantly suppressed or enhanced by crystal anisotropy.
• A linear, non-spreading, shape-preserving vector beam was created.
• Propagation trajectories of circular Airy vector beams were dynamically controlled.
• Controlled clockwise or anticlockwise rotation of vector beams was achieved.

Conclusions:

• Anisotropic crystals provide a powerful means to control vector beam diffraction.
• This control enables the creation of novel light beams with tailored propagation characteristics.
• The findings have implications for optical manipulation, beam shaping, and advanced optical systems.