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Related Experiment Video

Updated: May 12, 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

Two-dimensional subwavelength gratings with different frontside/backside reflectance.

Hans Lochbihler¹, Yan Ye

¹Louisenthal GmbH, Gmund, Germany.

|April 3, 2013

Summary

This summary is machine-generated.

This study introduces novel two-dimensional gratings that display distinct front and back reflectance. These subwavelength structures offer tunable color filtering for industrial applications.

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Last Updated: May 12, 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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Published on: October 11, 2016

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Area of Science:

Optics and Photonics
Materials Science

Background:

Two-dimensional periodic subwavelength gratings offer unique optical properties.
Controlling front and back side optical responses is crucial for advanced photonic devices.

Purpose of the Study:

To present a novel two-dimensional periodic subwavelength grating concept.
To demonstrate tunable color filtering properties with distinct front and back side optical responses.
To explore the potential for industrial mass production.

Main Methods:

Conceptual design of a metalized hole array and nanodot array structure.
Optical characterization of an aluminum grating with a 243 nm period.
Numerical simulations to confirm optical properties and color filtering effects.

Main Results:

Demonstrated different reflectance on the front and back sides of the grating.
Exhibited color filtering properties for unpolarized light in both reflectance and transmittance.
Observed distinct colors for frontside and backside illumination, confirmed by numerical study.

Conclusions:

The proposed subwavelength grating structure exhibits asymmetric optical responses.
The gratings show potential for color filtering applications with tunable characteristics.
Feasibility of replication using nanoimprint processes suggests industrial viability.