@article{046207a758cf4351b88e8a3db63ed88a,
title = "Size dependence of the resonant third-order nonlinear refraction of colloidal PbS quantum dots",
abstract = "Due to their high resonant third-order nonlinear response, lead sulfide quantum dots (QDs) are potential materials for applications in the field of nonlinear optics. In this paper, we implement the Z-scan method to study the resonant nonlinear response of lead sulfide QDs in colloidal solutions. We managed to measure the purely intrinsic resonant nonlinear response, free of thermal contribution. We report that the lead sulfide QD third-order nonlinear response per QD shows an unconventional increase. A figure of merit for QD nonlinearity grows as a power function with a factor of 2.9.",
keywords = "Lead sulfide, Nonlinear refraction, Quantum dots, Third-order nonlinearity, Z-scan",
author = "Skurlov, {Ivan D.} and Ponomareva, {Evgeniia A.} and Ismagilov, {Azat O.} and Putilin, {Sergey E.} and Vovk, {Ilia A.} and Sokolova, {Anastasiia V.} and Tcypkin, {Anton N.} and Litvin, {Aleksandr P.}",
note = "Funding Information: Acknowledgments: A.P.L. thanks the Ministry of Education of the Russian Federation for the financial support (Scholarship of the President of the Russian Federation for Young Scientists and Graduate Students, SP-70.2018.1). Funding Information: Funding: The work was supported by the Ministry of Education and Science of the Russian Federation (Passport No. 2019-0903) and Russian Foundation for Basic Research (Project no. 18-32-00027). Publisher Copyright: {\textcopyright} 2020 by the authors.",
year = "2020",
month = jun,
day = "1",
doi = "10.3390/PHOTONICS7020039",
language = "English",
volume = "7",
journal = "Photonics",
issn = "2304-6732",
publisher = "MDPI AG",
number = "2",
}