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https://doi.org/10.1364/OE.16.006999
Title: | Three-photon absorption in semiconductor quantum dots: Experiment | Authors: | Xiaobo, F. Yu, L.A. Jun, H. Ben, C.W.J. Hairu, X. Wee, S.C. Wei, J. |
Issue Date: | 12-May-2008 | Citation: | Xiaobo, F., Yu, L.A., Jun, H., Ben, C.W.J., Hairu, X., Wee, S.C., Wei, J. (2008-05-12). Three-photon absorption in semiconductor quantum dots: Experiment. Optics Express 16 (10) : 6999-7005. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.16.006999 | Abstract: | The four-band model, derived under the effective-mass approximation for cubic semiconductor quantum dots (QDs), is compared with experimental measurements on frequency degenerate three-photon absorption (3PA) in CdSe QDs and ZnS QDs. Qualitatively, the model provides the correct prediction on the magnitude of the 3PA cross-sections, which are in the range from 10 -79 to 10-77 cm6s2photon -2 in the light frequency region of interest. More noticeably, the theoretical conclusion of an increasing tendency in the 3PA cross-sections with increasing dot-size is in agreement with the experiment. The discrepancy is also found for smaller QDs (dot-radius is less than one-third of the exciton Bohr radius), which is attributed to neglecting the mixing among the three valence bands in the theory. © 2008 Optical Society of America. | Source Title: | Optics Express | URI: | http://scholarbank.nus.edu.sg/handle/10635/95316 | ISSN: | 10944087 | DOI: | 10.1364/OE.16.006999 |
Appears in Collections: | Staff Publications |
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