Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2906904
Title: Direct observation of three-photon resonance in water-soluble ZnS quantum dots
Authors: He, J.
Scholes, G.D.
Ang, Y.L.
Ji, W. 
Beh, C.W.J.
Chin, W.S. 
Issue Date: 2008
Citation: He, J., Scholes, G.D., Ang, Y.L., Ji, W., Beh, C.W.J., Chin, W.S. (2008). Direct observation of three-photon resonance in water-soluble ZnS quantum dots. Applied Physics Letters 92 (13) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2906904
Abstract: We report on large three-photon absorption (3PA) in thioglycol-capped ZnS semiconductor quantum dots (QDs) at different wavelengths with femtosecond Z-scan technique. Both the intrinsic 3PA coefficients and cross sections of the 1.3 nm sized ZnS QDs in aqueous solution are nearly one order of magnitude greater than that of ZnS bulk crystal. The 3PA resonance in ZnS QDs is observed at the lowest excitonic transition of 1S (e) -1 S32 (h). © 2008 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/75959
ISSN: 00036951
DOI: 10.1063/1.2906904
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