Abbreviated Journal Title
Opt. Express
Keywords
DOPED SILICON; PHOTONICS; SILICIDES; METALS; Optics
Abstract
Platinum germanides (PtGe) were investigated for infrared plasmonic applications. Layers of Pt and Ge were deposited and annealed. X-ray diffraction identified PtGe2 and Pt2Ge3 phases, and x-ray photoelectron spectroscopy determined vertical atomic composition profiles for the films. Complex permittivity spectra were measured by ellipsometry over the 2 to 15 mu m wavelength range. Surface plasmon polariton (SPP) characteristics such as propagation length and field penetration depth were calculated. Photon-to-SPP couplers in the form of 1D lamellar gratings were fabricated and characterized in the range 9 - 10.5 mu m via wavelength-dependent specular reflection spectra for multiple angles of incidence. The observed resonances compare well with calculated spectra for SPP excitation on PtGe2. Platinum germanides are CMOS compatible and may serve as SPP hosts for on-chip mid-IR plasmonic components with tighter field confinement than noble-metal hosts.
Journal Title
Optics Express
Volume
23
Issue/Number
3
Publication Date
1-1-2015
Document Type
Article
Language
English
First Page
3316
Last Page
3326
WOS Identifier
ISSN
1094-4087
Recommended Citation
Cleary, Justin W.; Streyer, William H.; Nader, Nima; Vangala, Shiva; Avrutsky, Ivan; Claflin, Bruce; Hendrickson, Joshua; Wasserman, Daniel; Peale, Robert E.; Buchwald, Walter; and Soref, Richard, "Platinum germanides for mid- and long-wave infrared plasmonics" (2015). Faculty Bibliography 2010s. 6475.
https://stars.library.ucf.edu/facultybib2010/6475
Comments
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