Messanae Universitas Studiorum

Is the spatially averaged spectrum equal to the global spectrum?

Pistone, Giuseppe and Di Stefano, Omar and Savasta, Salvatore and Girlanda, Raffaello (2003) Is the spatially averaged spectrum equal to the global spectrum? Physica Status Solidi (c) (5). pp. 1425-1428.

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Abstract

Near-field optical spectroscopy and microscopy give access to excitations that cannot be revealed in the far zone. In order to investigate these remarkable differences, we present a theoretical analysis of the local optical properties of semiconductor quantum wells including the effects of disorder arising from interface fluctuations. The far-field absorption spectrum is compared with spatially averaged absorption spectra calculated at different spatial resolutions. We find that summing up local optical spectra does not reproduce the global spectrum in contrast to findings at diffraction-limited resolutions.

Item Type: Article
Subjects: M.U.S. - Contributi Scientifici > 02 - Scienze fisiche
Depositing User: Stage ICCU
Date Deposited: 25 May 2005
Last Modified: 20 Sep 2012 08:44
URI: http://cab.unime.it/mus/id/eprint/303

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