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Proceedings Paper

Giant optical nonlinearity interferences in quantum structures (Conference Presentation)
Author(s): Sarah Houver; Armand Lebreton; Teldo Pereira; Gangyi Xu; Raffaele Colombelli; Iman Kundu; Lianhe Li; Edmund Linfield; Giles Davies; Juliette Mangeney; Jerome Tignon; Robson Ferreira; Sukhdeep Dhillon

Paper Abstract

Second-order optical nonlinearities can be greatly enhanced by orders of magnitude in resonantly excited nanostructures. These resonant nonlinearities continually attract attention, particularly in newly discovered materials. However, they are frequently not as heightened as currently predicted, limiting their exploitation in nanostructured nonlinear optics. Here, we present a clear-cut theoretical and experimental demonstration that the second-order nonlinear susceptibility can vary by orders of magnitude as a result of giant destructive, as well as constructive, interference effects in complex systems. Using terahertz quantum-cascade-lasers as a model source to investigate interband and intersubband nonlinearities, we show that these giant interferences are a result of an unexpected interplay of the second-order nonlinear contributions of multiple light and heavy hole states.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112780N (10 March 2020); doi: 10.1117/12.2546443
Show Author Affiliations
Sarah Houver, Lab. de Physique de l'ens de Lyon (France)
Armand Lebreton, Lab. de Physique de l'ens de Lyon (France)
Teldo Pereira, Univ. Federal de Mato Grosso (Brazil)
Gangyi Xu, Ctr. de Nanosciences et de Nanotechnologies (France)
Raffaele Colombelli, Ctr. de Nanosciences et de Nanotechnologies (France)
Iman Kundu, Univ. of Leeds (United Kingdom)
Lianhe Li, Univ. of Leeds (United Kingdom)
Edmund Linfield, Univ. of Leeds (United Kingdom)
Giles Davies, Univ. of Leeds (United Kingdom)
Juliette Mangeney, Lab. de Physique Statistique de l'ENS (France)
Jerome Tignon, Lab. de Physique Statistique de l'ENS (France)
Robson Ferreira, Lab. de Physique Statistique de l'ENS (France)
Sukhdeep Dhillon, Lab. de Physique Statistique de l'ENS (France)

Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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