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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/51995
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- Title
- Enhanced two-photon absorption of CdS nanocrystal rods
- Author(s)
- Li, Xiangping; van Embden, Joel; Chon, James W. M.; Gu, Min
- Abstract
- In this letter we report that CdS nanocrystals are reshaped into an elongated rod form for increasing two-photon absorption. CdS quantum rods with uniform rod dimensions have been synthesized and their two-photon absorption cross section in solution has been characterized using the z -scan method and the two-photon induced fluorescence study. The absorption cross section was found to be 20.9x10-46 cm4 /s photon-1 under two-photon excitation at wavelength 800 nm, which is an order of magnitude larger than that of CdS quantum dots of similar diameters. The higher two-photon absorption coefficient establishes the potential of this class of quantum rods for various photonic applications.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Source
- Applied Physics Letters, Vol. 94, no. 10 (Mar 2009)
- Publication year
- 2009
- FOR Code(s)
- 020503 Nonlinear Optics and Spectroscopy; 020504 Photonics, Optoelectronics and Optical Communications
- Keyword(s)
- II-VI semiconductors; Cadmium compounds; Fluorescence; Nanostructured materials; Nanotechnology; Semiconductors; Two-photon spectra; Wide band gap
- Publisher
- American Institute of Physics
- ISSN
- 0003-6951
- Publisher URL
- http://dx.doi.org/10.1063/1.3100196
- Copyright
- Copyright © 2009 American Institute of Physics. Published version of this paper reproduced here in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed
