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Proceedings Paper

Hyperbolic metamaterial filter for angle-independent TM transmission in the infrared regime (Conference Presentation)
Author(s): Golsa Mirbagheri; Kaitlin J. Dunn; Derek J. Kosciolek; Igor Bendoym; David Thomas Crouse

Paper Abstract

In this project we propose and fabricate a hyperbolic metamaterials-based narrowband notch filter for the infrared regime with a center wavelength that remains fixed as the angle of incidence changes from 0 to 30 degrees for TM polarization. This novel device modifies a conventional Bragg reflector by including a middle resonance layer that opens up a narrow, highly transmissive band. To achieve angular independence, a subwavelength sized array of silver wires are inserted in a vertical orientation and permeate all 7 Si and SiO2 layers of the structure. In this work the theoretical underpinnings are explored using Maxwell-Garnett Theory, and simulated with 3D finite element full wave electromagnetic modeling software. Simulations demonstrate that the device is capable of up to 60% transmission at a fixed center wavelength for TM polarization in the infrared. The device is fabricated using typical microfabrication techniques. The silver nanowires are fabricated via DC electrodeposition. The angle and polarization dependent transmission, reflection and absorption of the device are experimentally measured, and scanning electron microscopy images of the structure are shown. Though the experimental validation of this device is performed for the infrared regime, scaling the structural sizes can extend the operating regime to higher and lower wavelengths. Whether used as a stand-alone filter, or integrated into a hyperspectral array, the angle-independent response of this filter has many uses in remote sensing applications.

Paper Details

Date Published: 29 September 2017
Proc. SPIE 10343, Metamaterials, Metadevices, and Metasystems 2017, 103431U (29 September 2017); doi: 10.1117/12.2273968
Show Author Affiliations
Golsa Mirbagheri, Clarkson Univ. (United States)
Kaitlin J. Dunn, Clarkson Univ. (United States)
Derek J. Kosciolek, Clarkson Univ. (United States)
Igor Bendoym, Phoebus Optoelectronics (United States)
David Thomas Crouse, Clarkson Univ. (United States)

Published in SPIE Proceedings Vol. 10343:
Metamaterials, Metadevices, and Metasystems 2017
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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