Using resistive readout to probe ultrafast dynamics of a plasmonic sensor

Alec Cheney; Borui Chen; Alexander Cartwright; Tim Thomay

doi:10.1117/12.2289249

22 February 2018 Using resistive readout to probe ultrafast dynamics of a plasmonic sensor

Alec Cheney, Borui Chen, Alexander Cartwright, Tim Thomay

Proceedings Volume 10530, Ultrafast Phenomena and Nanophotonics XXII; 105300E (2018) https://doi.org/10.1117/12.2289249
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Surface plasmons in a DC current lead to an increase in scattering processes, resulting in a measurable increase in electrical resistance of a plasmonic nano-grating. This enables a purely electronic readout of plasmonically mediated optical absorption. We show that there is a time-dependence in these resistance changes on the order of 100ps that we attribute to electron-phonon and phonon-phonon scattering processes in the metal of the nano-gratings. Since plasmonic responses are strongly structurally dependent, an appropriately designed plasmoelectronic detector could potentially offer an extremely fast response at communication wavelengths in a fully CMOS compatible system.

Citation Download Citation

Alec Cheney, Borui Chen, Alexander Cartwright, and Tim Thomay "Using resistive readout to probe ultrafast dynamics of a plasmonic sensor", Proc. SPIE 10530, Ultrafast Phenomena and Nanophotonics XXII, 105300E (22 February 2018); https://doi.org/10.1117/12.2289249

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