Resonant degenerate four-wave mixing in a number of infrared-absorbing dyeswas studied with 160-psec pulses at 1.064 µm. Hyperpolarizabilities in the range of 10-44 to 10-42 V-2 m5 were observed. A theoretical model based on a two-band system is developed that explains the results and permits the prediction of hyperpolarizabilities from the linear spectroscopic properties.
© 1987 Optical Society of America
C. Maloney and W. Blau, "Resonant third-order hyperpolarizabilities of large organic molecules," J. Opt. Soc. Am. B 4, 1035-1039 (1987)