Optical antenna enhanced graphene photodetector
Abstract
We report on the integration of an individual, metal-based, plasmonic nano-antenna on a graphene photodetector. The device exhibits an electromagnetic resonance at a wavelength of 580 nm with well-defined polarization sensitivity. With no applied bias voltage, this antenna-coupled graphene photodetector features a responsivity of ∼17 nA/μW, which is four orders of magnitude higher than previously studied single antenna enhanced detectors. Finally, we measure a signal-to-noise ratio of ∼200 in a 1-Hz bandwidth, with an average photocurrent value of 1.2 nA.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 15, 2014
- Source ID
- 10.1063/1.4904800
Entities
People
- A. Nick Vamivakas
- Chitraleema Chakraborty
- G. W. Wicks
- Kenneth M Goodfellow
- Lukas Novotny
- Ryan Beams
Organizations
- Army Research Office
- ETH Zurich
- National Science Foundation
- Swiss National Science Foundation
- United States Department of Energy
- University of Rochester