Sub-picosecond studies of the third-order optical nonlinearities of - toluene solutions
Stelios CourisInstitute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, PO Box 1527, Heraklion 71110, Crete, GreeceE. KoudoumasInstitute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, PO Box 1527, Heraklion 71110, Crete, GreeceFengliang DongInstitute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, PO Box 1527, Heraklion 71110, Crete, GreeceSydney LeachInstitute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, PO Box 1527, Heraklion 71110, Crete, Greece
1996en
ABI
Annotatsiya
The third-order optical nonlinearities of - toluene solutions are studied employing transient degenerate four-wave mixing (DFWM) and z-scan techniques using 0.5 ps laser pulses at 497 nm. The concentration dependence of the of the solution and both the sign and the magnitude of the real and imaginary parts of the third-order susceptibility of are obtained. The molecular second hyperpolarizability of is found to be . The role of nonlinear absorption and its influence on the DFWM signal is discussed. Finally a comparison of our experimental data with other data in the literature is given.
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