Carriers' spatial separation nonlinearity in quantum wells

Fahhad Alharbi, Frank S. Barnes

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present theoretical analysis and simulation of optical nonlinearity in asymmetric quantum well (QW) that explicitly include the effect of carriers' spatial separation. Carriers' spatial separation nonlinearity (CSSNL) has two additional significant contributions to the induced polarization beside the transition dipole moment; namely, the permanent dipole moment (PDM) and the time-varying internally induced electrical potential. These effects are included by modifying the interaction Hamiltonian. We focus mainly on the polarization at the frequency of the applied field, from which the nonlinear change of refractive index can be obtained. The results show that the CSSNL largely enhances the refractive index change when compared with the Kerr effect. Also, the inclusion of the induced electric potential effect adds a second-order interaction contribution to the refractive index change.

Original languageEnglish
Pages (from-to)2279-2292
Number of pages14
JournalJournal of Modern Optics
Volume52
Issue number16
DOIs
Publication statusPublished - 10 Nov 2005
Externally publishedYes

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nonlinearity
quantum wells
refractivity
dipole moments
polarization
Kerr effects
interactions
inclusions
electric potential
simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Carriers' spatial separation nonlinearity in quantum wells. / Alharbi, Fahhad; Barnes, Frank S.

In: Journal of Modern Optics, Vol. 52, No. 16, 10.11.2005, p. 2279-2292.

Research output: Contribution to journalArticle

Alharbi, Fahhad ; Barnes, Frank S. / Carriers' spatial separation nonlinearity in quantum wells. In: Journal of Modern Optics. 2005 ; Vol. 52, No. 16. pp. 2279-2292.
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