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Proceedings Paper

Continuously tunable ultrastrong light-matter interaction
Author(s): Curdin Maissen; Giacomo Scalari; Mattias Beck; Jérôme Faist
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Paper Abstract

We present results on the continuous tuning of the interaction strength between the cyclotron transition in a two dimensional electron gas (2DEG) and the LC mode of THz split ring resonators (SRRs) with ωLC = 2π× 0.52 THz. The interaction strength is continuously modified in a gated sample by changing the electron density in the 2DEG. We observe an asymmetric emergence of the polaritonic branches at the onset of the ultrastrong coupling. Both, the line widths and transmission amplitudes are modulated when moving from the weak coupling regime to the ultrastrong coupling regime reaching a normalized coupling rate Ω ω= 0.21.

Paper Details

Date Published: 14 March 2015
PDF: 6 pages
Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 93610F (14 March 2015); doi: 10.1117/12.2079178
Show Author Affiliations
Curdin Maissen, ETH Zürich (Switzerland)
Giacomo Scalari, ETH Zürich (Switzerland)
Mattias Beck, ETH Zürich (Switzerland)
Jérôme Faist, ETH Zürich (Switzerland)

Published in SPIE Proceedings Vol. 9361:
Ultrafast Phenomena and Nanophotonics XIX
Markus Betz; Abdulhakem Y. Elezzabi; Kong-Thon Tsen, Editor(s)

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