Title :
Large third-order nonlinearities for the excited states of diphenylhexatriene and quaterphenyl measured through time resolved degenerate four-wave mixing
Author :
Rosker, M.J. ; Marcy, H.O. ; Warren, L.F.
Author_Institution :
Rockwell Int. Corp., Thousand Oaks, CA, USA
Abstract :
The results demonstrate that time resolved degenerate four wave mixing (DFWM) techniques offers an exceptional method for probing the dynamics of the molecular conformation and orientation after photoexcitation. We have also confirmed the observation large excited-state nonlinear enhancement in DPH of Rodenberger et al. and have extended observation of this phenomenon to a new and potentially important class of materials, p-oligophenylenes
Keywords :
excited states; high-speed optical techniques; molecular configurations; multiwave mixing; optical materials; organic compounds; photoexcitation; time resolved spectroscopy; diphenylhexatriene; dynamics; excited states; large excited-state nonlinear enhancement; large third-order nonlinearities; molecular conformation; molecular orientation; p-oligophenylenes; photoexcitation; quaterphenyl; time resolved degenerate four-wave mixing; Four-wave mixing; Gratings; Nonlinear optics; Optical harmonic generation; Optical mixing; Optical pulses; Optical pumping; Solvents; Time measurement; Ultrafast optics;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 1994. NLO '94 IEEE
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1473-5
DOI :
10.1109/NLO.1994.470898
