Coherent control of light interaction with graphene
Abstract
We report the experimental observation of all-optical modulation of light in a graphene film. The graphene film is scanned across a standing wave formed by two counter-propagating laser beams in a Sagnac interferometer. Through a coherent absorption process the on-axis transmission is modulated with close to 80% efficiency. Furthermore we observe modulation of the scattered energy by mapping the off-axis scattered optical signal: scattering is minimized at a node of the standing wave pattern and maximized at an antinode. The results highlight the possibility to switch and modulate any given optical interaction with deeply sub-wavelength films.
- Publication:
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Optics Letters
- Pub Date:
- September 2014
- DOI:
- 10.1364/OL.39.005345
- arXiv:
- arXiv:1406.6217
- Bibcode:
- 2014OptL...39.5345R
- Keywords:
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- Physics - Optics
- E-Print:
- 4 pages, 4 figures