The dispersions of the fifth- and seventh-order nonlinear optical susceptibilities, χ<sup>(5)</sup><sub>113333</sub> and χ<sup>(7)</sup><sub>11333333</sub> , respectively, of a polydiacetylene film, poly(4-BCMU), are determined through electroabsorption spectroscopy. To our knowledge this is the first time that a spectrum of seventh-order nonlinear optical susceptibility has been obtained by means of electro-optic measurements.
© 2000 Optical Society of America
Ke Yang, Jayant Kumar, Dong-Chan Lee, Daniel J. Sandman, and Sukant Tripathy, "Determining the dispersions of the fifth- and seventh-order nonlinear optical susceptibilities of a poly(4-BCMU) film through electroabsorption spectroscopy," Opt. Lett. 25, 1186-1188 (2000)