Optimized simultaneous generation of dual-wavelength phase and polarization singularities

Area of Science:

• Optics and Photonics
• Quantum Information Science

Background:

• Optical singularities possess unique phase and polarization properties crucial for optical communication, imaging, and information processing.
• Existing methods for generating optical singularities are typically limited to single wavelengths, restricting their use in multi-spectral applications.

Purpose of the Study:

• To develop and demonstrate a technique for the simultaneous generation of optical singularities at multiple wavelengths.
• To overcome the limitations of single-wavelength singularity generation for advanced optical applications.

Main Methods:

• Optimization of a liquid crystal spatial light modulator (LC-SLM) for multi-wavelength phase modulation.
• Encoding a single gray-scale pattern onto the LC-SLM to control light phase at multiple wavelengths simultaneously.

Main Results:

• Successful simultaneous generation of phase and polarization singularities.
• Demonstration at two distinct wavelengths: 532 nm and 635 nm.

Conclusions:

• The developed technique effectively creates optical singularities across multiple wavelengths.
• This method expands the applicability of optical singularities in multi-spectral optical systems.