Beena, Jain ; Srivastava, Arvind Kumar ; Uppal, Abha ; Gupta, Pradeep Kumar ; Das, Kaustuv (2010) NIR femtosecond laser induced hyper-Rayleigh scattering and luminescence from silver nanoprisms Journal of Nanoscience and Nanotechnology, 10 (9). pp. 5826-5830. ISSN 2078-0338
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Official URL: http://www.ingentaconnect.com/content/asp/jnn/2010...
Related URL: http://dx.doi.org/10.1166/jnn.2010.2462
Abstract
The nonlinear response of silver nanoprisms (edge length 40 ± 5 nm and thickness 4.5 ± 0.5 nm) was studied by exciting with NIR femtosecond pulses (780-880 nm). These nanostructures were observed to generate hyper-Rayleigh scattering (HRS) and broadband luminescence. While HRS showed the expected second order power dependence, the luminescence was observed to follow a third order excitation power dependence. Both HRS and luminescence were observed to be dipolar in nature. The first hyperpolarizability of the nanoprisms was found to be an order of magnitude higher than ~15 nm sized nanospheres.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Proqres Publishing House. |
| Keywords: | Silver Nanoprism; Multi-photon Excitation; Hyper-Rayleigh Scattering; Luminescence; First Hyperpolarizability |
| ID Code: | 83490 |
| Deposited On: | 21 Feb 2012 07:55 |
| Last Modified: | 21 Feb 2012 07:55 |
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