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Intersubband polaritons in a one-dimensional surface plasmon photonic crystal

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number231123
<mark>Journal publication date</mark>6/12/2010
<mark>Journal</mark>Applied Physics Letters
Issue number23
Number of pages3
Publication StatusPublished
<mark>Original language</mark>English


In this work we demonstrate the achievement of light-matter strong coupling regime between an intersubband transition and the photonic bandlike mode supported by a metallic grating. Polaritonic resonances have been identified in the reflectivity spectra at 10° incidence, with a clear anticrossing appearing when the photonic mode is tuned across the transition line. Experimental results are in good agreement with the simulations performed with a scattering-matrix approach. This cavity design can be further optimized and is likely to open the way to a new class of time-resolved measurements, as it allows pump-and-probe measurements to be performed in collinear geometries.