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

Research output: Contribution to journalArticle

38 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 languageEnglish (US)
Pages (from-to)6530-6533
Number of pages4
JournalPhysical Review B
Volume44
Issue number12
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Roles of band states and two-photon transitions in the electroabsorption of a polydiacetylene'. Together they form a unique fingerprint.

  • Cite this