Amplified spontaneous emission in colloidal solutions of two-photon-excited CdSe/CdS nanoplatelets

Two-photon processes in CdSe/CdS nanoplatelets were investigated under high intensity excitation by femtosecond laser radiation (1064 nm, 100kHz). The open-aperture z-scan technique and the measurement of photoluminescence spectra were utilized for studying their nonlinear optical properties. As a r...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-03, Vol.1851 (1), p.12012
Main Authors: Laktaev, I D, Saidzhonov, B M, Vasiliev, R B, Smirnov, A M, Butov, O V
Format: Article
Language:English
Subjects:
Amplification
Cadmium sulfide
Colloiding
Optical properties
Photoluminescence
Photon absorption
Photons
Physics
Spontaneous emission
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Summary:Two-photon processes in CdSe/CdS nanoplatelets were investigated under high intensity excitation by femtosecond laser radiation (1064 nm, 100kHz). The open-aperture z-scan technique and the measurement of photoluminescence spectra were utilized for studying their nonlinear optical properties. As a result, two-photon absorption and amplified spontaneous emission at high intensity were found in these nanoplatelets.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1851/1/012012