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Published on: September 26, 2014
Long vs. short-range orders in random subwavelength hole arrays
Frédéric Przybilla1, Cyriaque Genet, Thomas W Ebbesen
1ISIS, University of Strasbourg and CNRS, F-67000 Strasbourg, France.
Optics Express
|March 16, 2012
Summary
Disorder in subwavelength hole arrays affects optical transmission. Short-range correlations, driven by packing constraints, significantly alter properties compared to single holes, especially in dense patterns.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Periodic subwavelength hole arrays exhibit unique optical properties.
- Introducing disorder can significantly alter these optical characteristics.
- Understanding disorder effects is crucial for designing advanced optical devices.
Purpose of the Study:
- To analyze the impact of progressive disorder on periodic subwavelength hole arrays.
- To investigate the relationship between structural disorder and optical transmission.
- To explore the role of correlations in random hole patterns.
Main Methods:
- Analysis of two disorder models using Fourier transforms and correlation functions.
- Experimental investigation of optical transmission properties.
- Controlled generation of random patterns to study packing constraints.
Main Results:
- Optical transmission is closely linked to the evolution of structure factors.
- Random arrays show optical properties differing from single holes due to short-range correlations.
- Short-range order can dominate long-range order in high-density patterns.
Conclusions:
- Disorder significantly modifies the optical behavior of subwavelength hole arrays.
- Hole-to-hole interactions, arising from packing constraints, are critical.
- Tailoring disorder offers a route to control optical properties in nanostructured materials.
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