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http://hdl.handle.net/2289/3447Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Karthikeyan, B. | - |
| dc.contributor.author | Anija, M. | - |
| dc.contributor.author | Venkatesan, P. | - |
| dc.contributor.author | Suchand Sandeep, C.S. | - |
| dc.contributor.author | Philip, Reji | - |
| dc.date.accessioned | 2008-03-19T05:39:08Z | - |
| dc.date.available | 2008-03-19T05:39:08Z | - |
| dc.date.issued | 2007-12 | - |
| dc.identifier.citation | Optics Communications, 2007, Vol.280, p482-486 | en |
| dc.identifier.issn | ISSN: 0030-4018 | - |
| dc.identifier.uri | http://hdl.handle.net/2289/3447 | - |
| dc.description | Restricted Access. | en |
| dc.description.abstract | Free-standing platinum–polyvinyl alcohol nanocomposite films have been prepared by a simple in situ method. By thermal annealing, Pt nanoparticles of different sizes and shapes have been obtained. Their optical nonlinearity is measured using ultrafast (100 fs) laser pulses at 404 nm, in the absorption wing region. A strong optical power limiting is found in the films. The timescale of this limiting action is ultrafast, as it happens within the incident laser pulsewidth. Experimental results and numerical simulation indicate that the sign of the nonlinearity can be controlled by varying the film composition and annealing temperature. Use of ultrashort laser pulses in the free-standing film configuration permits a direct and unambiguous determination of the electronic nonlinearity of the material, since accumulative effects occur at later times lying outside the sharp measurement window. | en |
| dc.format.extent | 446370 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en | en |
| dc.publisher | Elsevier B.V. | en |
| dc.relation.uri | http://dx.doi.org/10.1016/j.optcom.2007.08.046 | en |
| dc.rights | 2007 Elsevier | en |
| dc.title | Ultrafast optical power limiting in free-standing Pt - polyvinyl alcohol nanocomposite films synthesized in situ | en |
| dc.type | Article | en |
| Appears in Collections: | Research Papers (LAMP) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2007 Optics Communications V280 p482.pdf Restricted Access | Restricted Access | 435.91 kB | Adobe PDF | View/Open Request a copy |
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