R.D. Miller, D.M. Burland, et al.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Values of the second order hyperpolarizability β have been determined for p-nitroaniline (PNA) in solvents of varying polarity using the electric field induced second harmonic generation experimental technique. An observed solvent dependence of β0, the second order hyperpolarizability extrapolated to zero-frequency, is correlated with the solvent-induced shift of the PNA charge transfer absorption maximum λmax. The correlation is similar to the correlation between λmax and β0 observed in donor/acceptor p-substituted benzenes with different substituents. Both dependences can be understood within the framework of a simple four level Hückel model. © 1992.
R.D. Miller, D.M. Burland, et al.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
R.J. Twieg, D.M. Burland, et al.
SPIE OE/LASE 1994
M. Stähelin, Cecilia A. Walsh, et al.
Journal of Applied Physics
D.M. Burland, J.E. Rice, et al.
SPIE San Diego 1991