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Type: Artigo de periódico
Title: Raman Scattering From Optically Pumped Electron-hole Plasma In Insulating Gaas
Author: Vasconcellos A.R.
Turtelli R.S.
de Castro A.R.B.
Abstract: We measured the single particle Raman Scattering from an optically pumped electron-hole plasma in bulk insulating GaAs, using IR radiation of 1.06 μm to both excite and probe the plasma. The relevant theory is derived in terms of a Landau generalized quasi-particle picture and we show how many-body effects are discernible in the spectrum. The results of the experiment lend independent support to the model of two-photon absorption in GaAs and allowed us to place a lower bound of 1 × 1016 cm-3 for the threshold of saturation effects in the density of photo-generated electron-hole pairs in bulk GaAs. © 1977.
Rights: fechado
Identifier DOI: 10.1016/0038-1098(77)90409-4
Date Issue: 1977
Appears in Collections:Unicamp - Artigos e Outros Documentos

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