Efficient optical trapping of CdTe quantum dots by femtosecond laser pulses

Handle URI:
http://hdl.handle.net/10754/563918
Title:
Efficient optical trapping of CdTe quantum dots by femtosecond laser pulses
Authors:
Chiang, Weiyi; Okuhata, Tomoki; Usman, Anwar; Tamai, Naoto; Masuhara, Hiroshi
Abstract:
The development in optical trapping and manipulation has been showing rapid progress, most of it is in the small particle sizes in nanometer scales, substituting the conventional continuous-wave lasers with high-repetition-rate ultrashort laser pulse train and nonlinear optical effects. Here, we evaluate two-photon absorption in optical trapping of 2.7 nm-sized CdTe quantum dots (QDs) with high-repetition-rate femtosecond pulse train by probing laser intensity dependence of both Rayleigh scattering image and the two-photon-induced luminescence spectrum of the optically trapped QDs. The Rayleigh scattering imaging indicates that the two-photon absorption (TPA) process enhances trapping ability of the QDs. Similarly, a nonlinear increase of the two-photon-induced luminescence with the incident laser intensity fairly indicates the existence of the TPA process.
KAUST Department:
KAUST Solar Center (KSC); Physical Sciences and Engineering (PSE) Division
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry B
Issue Date:
11-Dec-2014
DOI:
10.1021/jp502524f
Type:
Article
ISSN:
15206106
Sponsors:
This work was supported the Ministry of Education of Taiwan (MOE-ATU Project; National Chiao Tung University) and the National Science Council of Taiwan (Grant NSC 100-2113-M-009-001). H.M. also thanks the Foundation of the Advancement for Outstanding Scholarship of Taiwan. The reviewers are also acknowledged for their valuable comments and advice.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Solar Center (KSC)

Full metadata record

DC FieldValue Language
dc.contributor.authorChiang, Weiyien
dc.contributor.authorOkuhata, Tomokien
dc.contributor.authorUsman, Anwaren
dc.contributor.authorTamai, Naotoen
dc.contributor.authorMasuhara, Hiroshien
dc.date.accessioned2015-08-03T12:19:31Zen
dc.date.available2015-08-03T12:19:31Zen
dc.date.issued2014-12-11en
dc.identifier.issn15206106en
dc.identifier.doi10.1021/jp502524fen
dc.identifier.urihttp://hdl.handle.net/10754/563918en
dc.description.abstractThe development in optical trapping and manipulation has been showing rapid progress, most of it is in the small particle sizes in nanometer scales, substituting the conventional continuous-wave lasers with high-repetition-rate ultrashort laser pulse train and nonlinear optical effects. Here, we evaluate two-photon absorption in optical trapping of 2.7 nm-sized CdTe quantum dots (QDs) with high-repetition-rate femtosecond pulse train by probing laser intensity dependence of both Rayleigh scattering image and the two-photon-induced luminescence spectrum of the optically trapped QDs. The Rayleigh scattering imaging indicates that the two-photon absorption (TPA) process enhances trapping ability of the QDs. Similarly, a nonlinear increase of the two-photon-induced luminescence with the incident laser intensity fairly indicates the existence of the TPA process.en
dc.description.sponsorshipThis work was supported the Ministry of Education of Taiwan (MOE-ATU Project; National Chiao Tung University) and the National Science Council of Taiwan (Grant NSC 100-2113-M-009-001). H.M. also thanks the Foundation of the Advancement for Outstanding Scholarship of Taiwan. The reviewers are also acknowledged for their valuable comments and advice.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleEfficient optical trapping of CdTe quantum dots by femtosecond laser pulsesen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalThe Journal of Physical Chemistry Ben
dc.contributor.institutionDepartment of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 Ta Hsueh Rd.Hsinchu, Taiwanen
dc.contributor.institutionDepartment of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 GakuenSanda, Japanen
kaust.authorUsman, Anwaren
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