Simple electrically tunable liquid crystal spatial phase modulator.

Area of Science:

• Photonics and Optical Engineering
• Materials Science

Background:

• Liquid crystal devices offer tunable optical properties.
• Controlling refractive index distributions is key for advanced optical systems.

Purpose of the Study:

• To demonstrate a simple, electrically tunable liquid crystal element for multiple optical functionalities.
• To showcase dynamic switching between different optical modes using electronic control.

Main Methods:

• Utilizing a liquid crystal element controlled by 4 electrodes.
• Employing a serpentine-shaped transparent indium tin oxide layer for electrical connections.
• Experimentally demonstrating dynamic generation of refractive index distributions.

Main Results:

• The device successfully generated spherical lens, axicon, cylindrical lens, and prism functionalities.
• Dynamic switching between these optical modes was achieved through simple electronic control.
• The element demonstrated tunable refractive index distributions.

Conclusions:

• The developed liquid crystal element provides versatile optical functionalities with simple electronic control.
• This technology holds significant potential for adaptive imaging, optogenetics, and photonic integrated circuits.