Please use this identifier to cite or link to this item:
https://doi.org/10.1364/JOSAB.26.001897
DC Field | Value | |
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dc.title | Two-photon absorption of quantum dots in the regime of very strong confinement: Size and wavelength dependence | |
dc.contributor.author | Qu, Y. | |
dc.contributor.author | Ji, W. | |
dc.date.accessioned | 2014-10-16T09:47:37Z | |
dc.date.available | 2014-10-16T09:47:37Z | |
dc.date.issued | 2009-10-01 | |
dc.identifier.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 | |
dc.identifier.issn | 07403224 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/98483 | |
dc.description.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. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1364/JOSAB.26.001897 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | PHYSICS | |
dc.description.doi | 10.1364/JOSAB.26.001897 | |
dc.description.sourcetitle | Journal of the Optical Society of America B: Optical Physics | |
dc.description.volume | 26 | |
dc.description.issue | 10 | |
dc.description.page | 1897-1904 | |
dc.description.coden | JOBPD | |
dc.identifier.isiut | 000270389200009 | |
Appears in Collections: | Staff Publications |
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