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https://doi.org/10.1016/j.physb.2011.02.001
Title: | Optical nonlinearity enhanced by metal nanoparticle in CdTe quantum dots | Authors: | Feng, X. Chen, Y. Hou, D. |
Keywords: | Optical nonlinearities of condensed matter Quantum dot |
Issue Date: | 15-Apr-2011 | Citation: | Feng, X., Chen, Y., Hou, D. (2011-04-15). Optical nonlinearity enhanced by metal nanoparticle in CdTe quantum dots. Physica B: Condensed Matter 406 (9) : 1702-1705. ScholarBank@NUS Repository. https://doi.org/10.1016/j.physb.2011.02.001 | Abstract: | The optical nonlinearity of a CdTe quantum dot enhanced by a gold nanoparticle has been theoretically studied by employing the multi-bands effective mass method. The energy levels have been computed using 6×6 k.p model for the valence band. The semiconductor quantum dot-size-dependent third-order susceptibility of third harmonic generation in a CdTeAu nanocrystal complex has been analyzed. It is found that the metal nanoparticle enhances the optical nonlinearity of the semiconductor quantum dot due to the dipole/multipole interaction that will bring in the strong damping and the field enhancement. By choosing the radius of CdTe quantum dot, the third-order nonlinear susceptibility for third harmonic generation can be optimized for the one- and multi-photon resonance. Also, we can alter the optical nonlinearity by changing the ratio of semiconductormetal nanoparticle distance to the metal nanoparticle radius. © 2011 Elsevier B.V. All rights reserved. | Source Title: | Physica B: Condensed Matter | URI: | http://scholarbank.nus.edu.sg/handle/10635/97449 | ISSN: | 09214526 | DOI: | 10.1016/j.physb.2011.02.001 |
Appears in Collections: | Staff Publications |
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