Open AccessAmplified spontaneous emission in colloidal solutions of two-photon-excited CdSe/CdS nanoplatelets
Author(s) -
Ivan D. Laktaev,
Bedil M. Saidzhonov,
R. B. Vasiliev,
A. M. Smirnov,
Oleg V. Butov
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1851/1/012012
Subject(s) - femtosecond , photoluminescence , materials science , excited state , optoelectronics , absorption (acoustics) , laser , photon , emission intensity , two photon excitation microscopy , amplified spontaneous emission , intensity (physics) , two photon absorption , quantum dot , optics , atomic physics , fluorescence , physics , composite material
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.