Discrete and diffuse emission following two-photon excitation of the E state in molecular iodine

D. L. Rousseau, P. F. Williams

Research output: Contribution to journalArticle

61 Scopus citations


We studied the fluorescence spectrum of EB transitions in molecular iodine following two-photon absorption. Discrete re-emission lines terminating in B-state levels ranging from v=0 to the dissociation limit were observed in addition to a series of broad diffuse lines. These diffuse lines represent the first observation of Condon "internal diffraction" resulting from a single vibronic state, and therefore the variation of the bands directly displays the variation of the Franck-Condon factor.

Original languageEnglish (US)
Pages (from-to)1368-1372
Number of pages5
JournalPhysical Review Letters
Issue number23
Publication statusPublished - Jan 1 1974
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this