Higher-order vector beams produced by photonic-crystal lasers

Area of Science:

• Optics and Photonics
• Laser Physics

Background:

• Vector beams, characterized by complex polarization patterns, are crucial for advanced optical applications.
• Photonic-crystal lasers offer unique possibilities for controlling light polarization and beam properties.

Purpose of the Study:

• To generate vector beams with higher-order polarization states.
• To design and analyze photonic crystal lattice structures for tailored cavity modes.
• To demonstrate the creation of doughnut-shaped vector beams with specific symmetries.

Main Methods:

• Design of photonic crystal lattice structures with specific symmetries.
• Fabrication of devices based on the designed lattice structures.
• Generation and characterization of vector beams from photonic-crystal lasers.

Main Results:

• Successful generation of vector beams with higher-order polarization states.
• Demonstration of doughnut-shaped vector beams with symmetries matching the designed cavity modes.
• Correlation between lattice structure symmetry and vector beam polarization properties.

Conclusions:

• Photonic-crystal lasers can be engineered to produce vector beams with controlled higher-order polarization.
• The designed lattice structures enable precise control over beam symmetry and polarization.
• This work paves the way for advanced applications in microscopy, laser processing, and optical trapping.