Nonlinear Raman Effects Enhanced by Surface Plasmon Excitation in Planar Refractory Nanoantennas

Sergey S Kharintsev; Anton V Kharitonov; Semion K Saikin; Alexander M Alekseev; Sergei G Kazarian

doi:10.1021/acs.nanolett.7b02252

Nonlinear Raman Effects Enhanced by Surface Plasmon Excitation in Planar Refractory Nanoantennas

Nano Lett. 2017 Sep 13;17(9):5533-5539. doi: 10.1021/acs.nanolett.7b02252. Epub 2017 Aug 22.

Authors

Sergey S Kharintsev^{1

2}, Anton V Kharitonov¹, Semion K Saikin^{3

4}, Alexander M Alekseev^{5

6}, Sergei G Kazarian⁷

Affiliations

¹ Department of Optics and Nanophotonics, Institute of Physics, Kazan Federal University , Kremlevskaya, 16, Kazan 420008, Russia.
² Institute of Perspective Technologies, Tatarstan Academy of Sciences , Baumana, 20, Kazan 420111, Russia.
³ Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States.
⁴ Department of Theoretical Physics, Institute of Physics, Kazan Federal University , Kremlevskaya, 16, Kazan 420008, Russia.
⁵ National Laboratory Astana, Nazarbayev University , Kabanbay batyr Avenue, 53, Astana 01000, Kazakhstan.
⁶ STC NMST, Moscow Institute for Electronic Technology , Moscow 124498, Russia.
⁷ Department of Chemical Engineering, Imperial College London, South Kensington Campus , London SW7 2AZ, United Kingdom.

PMID: 28813607
DOI: 10.1021/acs.nanolett.7b02252

Abstract

We consider a nonlinear mechanism of localized light inelastic scattering within nanopatterned plasmonic and Raman-active titanium nitride (TiN) thin films exposed to continuous-wave (cw) modest-power laser light. Owing to the strong third-order nonlinear interaction between optically excited broadband surface plasmons and localized Stokes and anti-Stokes waves, both stimulated and inverse Raman effects can be observed. We provide experimental evidence for coherent amplification of the localized Raman signals using a planar square-shaped refractory antenna.

Keywords: Nonlinear refractory plasmonics; inverse Raman effect; planar antenna; stimulated Raman scattering; tip-enhanced Raman scattering; titanium nitride.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.