Quantum cascade detectors operating in the strong light-matter coupling regime.
Mathurin Lagrée  1@  , Grégory Quinchard  1, *@  , Mathieu Jeannin  2, *@  , Oussama Ouznali  2@  , Adel Bousseksou  2@  , Virginie Trinite  1, *@  , Raffaele Colombelli  2, *@  , Alexandre Delga  1, *@  
1 : III-V Lab
Thales Research and Technology
THALES Research and Technology, Campus Polytechnique, 1, Avenue Augustin Fresnel, RD 128, 91767 Palaiseau cedex, France -  France
2 : Centre de Nanosciences et de Nanotechnologies
Université Paris-Saclay, Centre National de la Recherche Scientifique : UMR9001
10 Boulevard Thomas Gobert, 91120, Palaiseau -  France
* : Corresponding author

We investigate MIR QCDs (λ= 10µm) operating in the strong light-matter coupling regime. By measuring the optical absorption and the photocurrent, we are able to experimentally retrieve an effective (polariton) extraction efficiency. We develop an intuitive, semi-classical formalism based on the coupled modes theory (CMT) which quantitatively reproduces both the optical and electrical device characteristics.

The results highlights the potential of QCDs to study ISB-polaritonic systems, and establish an intuitive picture of the polaritonic extraction. They constitute a step towards a better understanding of the resonant electrical injection of carriers into a polaritonic state for efficient ISB polaritonic emitters.


 


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