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http://hdl.handle.net/2289/4049
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DC Field | Value | Language |
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dc.contributor.author | Tamilselvan, V. | - |
dc.contributor.author | Sridharan, Kishore | - |
dc.contributor.author | Rao, Narasimha K. | - |
dc.contributor.author | Philip, Reji | - |
dc.date.accessioned | 2011-05-10T07:47:09Z | - |
dc.date.available | 2011-05-10T07:47:09Z | - |
dc.date.issued | 2010-09-29 | - |
dc.identifier.citation | Journal of Physics D: Applied Physics, 2010, Vol.43, 385402 | en |
dc.identifier.issn | 0022-3727 | - |
dc.identifier.issn | 1361-6463 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/4049 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | Lead sulfide (PbS) microtowers on silicon substrates, having the physical properties of bulk PbS, have been synthesized. Optical nonlinearity studies using the open aperture z-scan technique employing 5 ns and 100 fs laser pulses reveal effective two-photon type absorption. For nanosecond excitation the nonlinear absorption coefficients (βeff) are in the order of 10−11 m W−1, two orders of magnitude less than the values reported for quantum confined PbS nanocrystals. For femtosecond excitation βeff is of the order of 10−14 m W−1. These results obtained in bulk PbS experimentally confirm the importance of quantum confinement in the enhancement of optical nonlinearities in semiconductor materials | en |
dc.language.iso | en | en |
dc.publisher | IOP Publishing Ltd. | en |
dc.relation.uri | http://iopscience.iop.org/0022-3727/43/38/385402 | en |
dc.relation.uri | http://adsabs.harvard.edu/abs/2010JPhD...43L5402T | en |
dc.rights | 2010 IOP Publishing Ltd. | en |
dc.title | Optical nonlinearity in lead sulfide microtowers | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
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2010_JPD_43_385402.pdf Restricted Access | Restricted Access | 1.11 MB | Adobe PDF | View/Open Request a copy |
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