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Proceedings Paper

Perfect light trapping in mid-IR using patterned ZnO structures (Presentation Recording)
Author(s): Shivashankar R. Vangala; Nima Nader; Justin W. Cleary; Junpeng Guo; Kevin D. Leedy; Joshua R. Hendrickson

Paper Abstract

Plasmonic assisted mid-IR light trapping using 1D grating structures patterned in Ga-ZnO is demonstrated. FDTD simulations of these structures with proper grating period and depth show the light trapping into a resonant mode resulting in a close to 100% reflection dip in the 4-8 µm wavelength regime. The 1D grating structures of different periods are fabricated using standard photolithography followed by etching. The resonant reflection dips in the experimentally measured spectra well agree with the FDTD simulation, exhibiting light trapping in the mid-IR as predicted.

Paper Details

Date Published: 5 October 2015
PDF: 1 pages
Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95471N (5 October 2015); doi: 10.1117/12.2189072
Show Author Affiliations
Shivashankar R. Vangala, Air Force Research Lab. (United States)
Nima Nader, Air Force Research Lab. (United States)
Justin W. Cleary, Air Force Research Lab. (United States)
Junpeng Guo, The Univ. of Alabama in Huntsville (United States)
Kevin D. Leedy, Air Force Research Lab. (United States)
Joshua R. Hendrickson, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 9547:
Plasmonics: Metallic Nanostructures and Their Optical Properties XIII
Allan D. Boardman; Din Ping Tsai, Editor(s)

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