Optical second harmonic generation from Wannier excitons

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dc.creatorPedersen, Thomas G.
dc.creatorCornean, Horia D.
dc.date2007-03-08
dc.date.accessioned2026-07-07T07:57:23Z
dc.date.available2026-07-07T07:57:23Z
dc.descriptionExcitonic effects in the linear optical response of semiconductors are well-known and the subject of countless experimental and theoretical studies. For the technologically important second order nonlinear response, however, description of excitonic effects has proved to be difficult. In this work, a simplified three-band Wannier exciton model of cubic semiconductors is applied and a closed form expression for the complex second harmonic response function including broadening is derived. Our calculated spectra are found to be in excellent agreement with the measured response near the band edge. In addition, a very substantial enhancement of the nonlinear response is predicted for the transparency region.
dc.identifierhttps://arxiv.org/abs/cond-mat/0703203
dc.identifierhttp://arxiv.org/abs/cond-mat/0703203
dc.identifierEurophysics Letters vol 78, No 2 (April 2007) 27005 (5pp)
dc.identifierdoi:10.1209/0295-5075/78/27005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127632
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleOptical second harmonic generation from Wannier excitons
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