Physical Review LettersOptical Anisotropy of an Excited Electronic StateKenneth B. Eisenthal, K. E. RieckhoffPublished Feb 12, 1968• 7 citationsPublisherAbstractReceived 29 December 1967DOI:https://doi.org/10.1103/PhysRevLett.20.309©1968 American Physical SocietyDOI10.1103/physrevlett.20.309