Optical vortex beam based optical fan for high-precision optical measurements and optical switching

Area of Science:

• Optics and Photonics
• Optical Science and Technology

Background:

• Polarization and orbital angular momentum are crucial for optical measurements and communications.
• Birefringent crystals exhibit thermal-dispersion and electro-optical effects vital for light manipulation.

Purpose of the Study:

• To present a simple, robust scheme for rotating light beams.
• To utilize combined polarization and orbital angular momentum properties.
• To leverage thermal-dispersion and electro-optical effects in birefringent crystals.

Main Methods:

• A novel method combining light polarization and orbital angular momentum.
• Utilizing the thermal-dispersion and electro-optical effects of birefringent crystals.
• Employing computer-based digital image processing for high-resolution crystal analysis.

Main Results:

• Demonstrated a method to rotate light beams, creating a fan-like effect.
• Achieved high-resolution determination of crystal temperature and thermal-dispersion differences.
• Successfully realized thermo-optic and electro-optic switches based on the rotation phenomenon.

Conclusions:

• The developed method offers a simple and robust way to control light beam rotation.
• The technique has potential applications in high-precision measurements, optical communications, remote sensing, and materials science.