Tunable complex photonic chiral lattices by reconfigurable optical phase engineering

Area of Science:

• Photonics
• Materials Science
• Optical Engineering

Background:

• Photonic chiral lattices are crucial for manipulating light.
• Fabricating complex, tunable chiral structures over large areas remains challenging.

Purpose of the Study:

• To introduce a novel single-step fabrication approach for tunable complex photonic chiral lattices.
• To demonstrate the generation of diverse chiral lattice geometries.
• To analyze the formation and properties of these structures in photorefractive materials.

Main Methods:

• Utilizing optical phase engineering with reconfigurable phase patterns.
• Employing computational simulation and experimental investigation.
• Analyzing lattice formation using plane-wave-guided and diffraction pattern imaging.

Main Results:

• Successfully fabricated tunable complex photonic chiral lattices with diverse geometries in a single step.
• Generated both periodic right- and left-handed chiral structures, and transversely quasi-crystallographic chiral structures.
• Demonstrated control over relative phase shifts between adjacent spiral units.

Conclusions:

• The proposed optical phase engineering method offers an efficient route for fabricating complex photonic chiral lattices.
• This technique enables precise control over structural chirality and geometry for advanced optical devices.
• The findings pave the way for new applications in areas requiring tailored light manipulation.