Conformal Spray-Deposited Fluorine-Doped Tin Oxide For Mid- And Long-Wave Infrared Plasmonics

Abstract

Nanocrystalline spray-deposited fluorine-doped tin oxide (FTO) was investigated for mid- and long-wave infrared plasmonics. Silicon lamellar gratings were conformally coated with FTO, and the excitation of surface plasmon polaritons (SPP) was investigated via their angle and wavelength-dependent reflectivity. Photon-to-SPP coupling efficiency as a function of grating parameters, and in comparsion to gallium-doped zinc oxide (GZO) gratings, was quantitatively analyzed based on a figure of merit related to the sharpness and depth of the coupling resonance. Conformal spray-deposited FTO would be useful in mid- and long-wave infrared plasmonic channel wave guides.

Publication Date

1-1-2017

Publication Title

Optical Materials Express

Volume

7

Issue

7

Number of Pages

2477-2486

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OME.7.002477

Socpus ID

85019623209 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85019623209

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