Please use this identifier to cite or link to this item:
|Title:||Two-photon absorption of quantum dots in the regime of very strong confinement: Size and wavelength dependence|
|Authors:||Qu, Y. |
|Citation:||Qu, Y., Ji, W. (2009-10-01). Two-photon absorption of quantum dots in the regime of very strong confinement: Size and wavelength dependence. Journal of the Optical Society of America B: Optical Physics 26 (10) : 1897-1904. ScholarBank@NUS Repository. https://doi.org/10.1364/JOSAB.26.001897|
|Abstract:||The frequency-degenerate two-photon absorption (TPA) in glutathione-capped colloidal CdTe quantum dots with a dot radius ranging from 1.5 to 2 nm, which belongs to the regime of very strong quantum confinement, is determined unambiguously by utilizing the Z-scan technique with femtosecond laser pulses. At laser wavelengths between 720 and 950 nm, the TPA cross sections are measured to be of the order of 10-47-10-46 cm4 s photon-1, with precise values depending on both the laser wavelength and the dot size. The TPA measurements are in agreement with theoretical modeling based on a spherical eight-band Pidgen and Brown model. The quantitative modeling reveals underlying factors that contribute to both the TPA-size relationship and size dispersion effects. © 2009 Optical Society of America.|
|Source Title:||Journal of the Optical Society of America B: Optical Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 17, 2018
WEB OF SCIENCETM
checked on Jul 9, 2018
checked on Jun 8, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.