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Related Experiment Video

Updated: Jul 9, 2026

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Liquid-crystal adaptive lenses with modal control.

A F Naumov¹, M Y Loktev, I R Guralnik

¹Samara Branch, P. N. Lebedev Physical Institute of Russian Academy of Science, 443011 Samara, Russia.

|December 19, 2007

Summary

Researchers developed novel liquid-crystal (LC) phase correctors for adaptive optics. These devices precisely control refractive index to shape light, enabling spherical and cylindrical wavefront generation for versatile focusing applications.

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Area of Science:

Optics and Photonics
Materials Science

Background:

Adaptive optics systems require precise wavefront control.
Liquid crystals (LCs) offer tunable optical properties.

Purpose of the Study:

To develop a novel approach for creating nematic liquid-crystal (LC) phase correctors.
To demonstrate the formation of spherical and cylindrical wave fronts using these LC devices.

Main Methods:

Utilized a distributed reactive electrical impedance in an LC cell.
Applied AC voltage to the cell boundary to control refractive index distribution.
Investigated the influence of AC control voltage frequency, electrode geometry, and cell electrical parameters on phase delay.

Main Results:

Successfully realized a cylindrical adaptive lens (15 mm x 4 mm aperture) and a spherical adaptive lens (6.5 mm aperture).
Demonstrated the capability of both devices to focus collimated light from infinity to 0.5 meters.

Conclusions:

The novel approach enables effective generation of spherical and cylindrical wave fronts using LC phase correctors.
The developed adaptive lenses offer tunable focusing capabilities for various optical applications.