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|Type:||Artigo de periódico|
|Title:||Laser-induced Heating Of Nanocrystals Embedded In Glass Matrices|
|Abstract:||Laser-induced heating of nanocrystals embedded in silicate glass matrices has been studied by photoluminescence and Raman scattering. No nonequilibrium optical phonons were found both for cw and 150-ps-long laser pulses in contrast to bulk samples. The measured laser-induced I temperature rise in one sample where the nanocrystal radii are ∼5 nm was found to be in quantitative agreement with a nonlinear theory proposed by Lax for bulk semiconductors. However, in another sample where the nanocrystal radii are only 3 nm, the observed temperature rise at high laser powers was significantly higher than the theoretical prediction. © 1996 American Institute of Physics.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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