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1 PublicationObservation of strong magneto plasmonic nonlinearity in bilayer graphene discs
Chin, M. L.; Matschy, S.; Stawitzki, F.; Poojali, J.; Hafez, H. A.; Turchinovich, D.; Winnerl, S.; Kumar, G.; Myers-Ward, R. L.; Dejarld, M. T.; Daniels, K. M.; Drew, H. D.; Murphy, T. E.; Mittendorff, M.
Graphene patterned into plasmonic structures like ribbons or discs strongly increases the linear and nonlinear optical interaction at resonance. The nonlinear optical response is governed by hot carriers, leading to a red-shift of the plasmon frequency. In magnetic fields, the plasmon hybridizes with the cyclotron resonance, resulting in a splitting of the plasmonic absorption into two branches. Here we present how this splitting can be exploited to tune the nonlinear optical response of graphene discs. In the absence of a magnetic field, a strong pump-induced increase in on-resonant transmission can be observed, but fields in the range of 3 T can change the characteristics completely, leading to an inverted nonlinearity. A two temperature model is provided that describes the observed behavior well.
Keywords: magnetoplasmonics; graphene; nonlinear optics
Involved research facilities
- Radiation Source ELBE DOI: 10.17815/jlsrf-2-58
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- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 31743) publication
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Data for "Observation of strong magneto plasmonic nonlinearity in bilayer …
ROBIS: 32034 HZDR-primary research data are used by this (Id 31743) publication
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Journal of Physics: Photonics 3(2021), 01LT01
DOI: 10.1088/2515-7647/abd7d0
Cited 1 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-31743