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Related Experiment Video

Updated: May 27, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

Diffraction grating with suppressed zero order fabricated using dielectric forces.

Gary G Wells¹, Naresh Sampara, Emmanouil E Kriezis

¹School of Science and Technology, Nottingham Trent University, Nottingham, UK.

|November 18, 2011

Summary

This summary is machine-generated.

This study demonstrates an electric-field method for creating diffractive optical devices. The technique uses dielectrophoresis to shape resin films, enabling voltage-controlled optical properties like suppressed zero-order transmission.

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Last Updated: May 27, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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Published on: July 18, 2015

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Area of Science:

Optics and Photonics
Materials Science
Electrical Engineering

Background:

Diffractive optical devices are crucial for manipulating light.
Existing fabrication methods can be complex and lack in-situ tunability.
Controlling optical properties post-fabrication remains a challenge.

Purpose of the Study:

To demonstrate a novel electric-field-assisted method for fabricating diffractive optical devices.
To achieve voltage-controlled, in-situ adjustment of optical diffraction patterns.
To produce solid-phase gratings with tailored optical properties.

Main Methods:

Formation of a uniform liquid UV curable resin film using an organic solvent drying ring.
Application of dielectrophoresis forces to stabilize the film and imprint a 20 μm pitch corrugation.
Simultaneous UV curing and in-situ voltage-controlled adjustment of the diffraction pattern.

Main Results:

Stable thin films of UV curable resin were successfully produced.
Periodic corrugation deformation was imprinted onto the film surface via dielectrophoresis.
A solid-phase grating with voltage-selected optical properties was fabricated, exhibiting suppressed zero transmitted order for 633 nm laser light.

Conclusions:

Electric-field-assisted fabrication offers a new route to tunable diffractive optical devices.
Dielectrophoresis provides precise control over surface morphology and optical function.
The demonstrated method enables the creation of custom optical elements with specific light manipulation capabilities.