Electrically switchable holographic liquid crystal/polymer Fresnel lens using a Michelson interferometer

Area of Science:

• Optics and Photonics
• Materials Science
• Liquid Crystal Technology

Background:

• Liquid crystal/polymer composites offer tunable optical properties.
• Fresnel lenses are essential for compact optical systems.
• Electrically switchable lenses provide dynamic focusing capabilities.

Purpose of the Study:

• To report a novel holographic fabrication technique for electrically switchable liquid crystal/polymer composite Fresnel lenses.
• To demonstrate the simplicity and versatility of the proposed method.
• To investigate the electro-optical performance of the fabricated lenses.

Main Methods:

• Utilized a Michelson interferometer setup to generate the Fresnel pattern.
• Incorporated a convex lens within the interferometer path for pattern generation.
• Fabricated electrically switchable liquid crystal/polymer composite Fresnel lenses.

Main Results:

• Successfully fabricated electrically switchable liquid crystal/polymer composite Fresnel lenses.
• Demonstrated the performance and electro-optical properties of the lenses.
• Highlighted the method's simplicity and ability to produce lenses with varying focal lengths.

Conclusions:

• The reported holographic technique provides a straightforward approach for fabricating tunable Fresnel lenses.
• The method is advantageous due to its simplicity and adaptability for creating lenses with different focal lengths.
• The fabricated lenses exhibit promising electro-optical properties for optical applications.