Roles of band states and two-photon transitions in the electroabsorption of a polydiacetylene

Y. Kawabe; F. Jarka; N. Peygambarian; D. Guo; S. Mazumdar; S. N. Dixit; F. Kajzar

doi:10.1103/PhysRevB.44.6530

Roles of band states and two-photon transitions in the electroabsorption of a polydiacetylene

Y. Kawabe, F. Jarka, N. Peygambarian, D. Guo, S. Mazumdar, S. N. Dixit, F. Kajzar

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40 Scopus citations

Abstract

We report results of experimental and theoretical investigations of electroabsorption (EA) in a DCH polydiacetylene. In addition to the Stark shift of the exciton, a high-energy feature is seen in EA, whose origin has been the subject of controversy. Based on exact theoretical calculation of the EA within an extended Peierls-Hubbard model, we ascribe the high-energy signal to transitions to a continuum threshold. We briefly discuss the contributions of these band threshold states to the third-order optical nonlinearity, (3).

Original language	English (US)
Pages (from-to)	6530-6533
Number of pages	4
Journal	Physical Review B
Volume	44
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.44.6530
State	Published - 1991

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Condensed Matter Physics

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10.1103/PhysRevB.44.6530

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abstract = "We report results of experimental and theoretical investigations of electroabsorption (EA) in a DCH polydiacetylene. In addition to the Stark shift of the exciton, a high-energy feature is seen in EA, whose origin has been the subject of controversy. Based on exact theoretical calculation of the EA within an extended Peierls-Hubbard model, we ascribe the high-energy signal to transitions to a continuum threshold. We briefly discuss the contributions of these band threshold states to the third-order optical nonlinearity, (3).",

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AU - Kawabe, Y.

AU - Jarka, F.

AU - Peygambarian, N.

AU - Guo, D.

AU - Mazumdar, S.

AU - Dixit, S. N.

AU - Kajzar, F.

PY - 1991

Y1 - 1991

N2 - We report results of experimental and theoretical investigations of electroabsorption (EA) in a DCH polydiacetylene. In addition to the Stark shift of the exciton, a high-energy feature is seen in EA, whose origin has been the subject of controversy. Based on exact theoretical calculation of the EA within an extended Peierls-Hubbard model, we ascribe the high-energy signal to transitions to a continuum threshold. We briefly discuss the contributions of these band threshold states to the third-order optical nonlinearity, (3).

AB - We report results of experimental and theoretical investigations of electroabsorption (EA) in a DCH polydiacetylene. In addition to the Stark shift of the exciton, a high-energy feature is seen in EA, whose origin has been the subject of controversy. Based on exact theoretical calculation of the EA within an extended Peierls-Hubbard model, we ascribe the high-energy signal to transitions to a continuum threshold. We briefly discuss the contributions of these band threshold states to the third-order optical nonlinearity, (3).

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JF - Physical Review B-Condensed Matter

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Roles of band states and two-photon transitions in the electroabsorption of a polydiacetylene

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