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Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots

1
Center of Informational Optical Technologies, ITMO University, Kronverksky pr. 49, Saint-Petersburg 197101, Russia
2
Laboratory of Quantum Processes and Measurements, ITMO University, Kronverksky pr. 49, Saint-Petersburg 197101, Russia
*
Author to whom correspondence should be addressed.
Photonics 2020, 7(2), 39; https://doi.org/10.3390/photonics7020039
Received: 12 May 2020 / Revised: 28 May 2020 / Accepted: 29 May 2020 / Published: 1 June 2020
(This article belongs to the Section Optoelectronics and Optical Materials)
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. View Full-Text
Keywords: quantum dots; lead sulfide; nonlinear refraction; third-order nonlinearity; z-scan quantum dots; lead sulfide; nonlinear refraction; third-order nonlinearity; z-scan
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MDPI and ACS Style

Skurlov, I.D.; Ponomareva, E.A.; Ismagilov, A.O.; Putilin, S.E.; Vovk, I.A.; Sokolova, A.V.; Tcypkin, A.N.; Litvin, A.P. Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots. Photonics 2020, 7, 39. https://doi.org/10.3390/photonics7020039

AMA Style

Skurlov ID, Ponomareva EA, Ismagilov AO, Putilin SE, Vovk IA, Sokolova AV, Tcypkin AN, Litvin AP. Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots. Photonics. 2020; 7(2):39. https://doi.org/10.3390/photonics7020039

Chicago/Turabian Style

Skurlov, Ivan D.; Ponomareva, Evgeniia A.; Ismagilov, Azat O.; Putilin, Sergey E.; Vovk, Ilia A.; Sokolova, Anastasiia V.; Tcypkin, Anton N.; Litvin, Aleksandr P. 2020. "Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots" Photonics 7, no. 2: 39. https://doi.org/10.3390/photonics7020039

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