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On the role of permanent dipoles in second harmonic generation
1993
Journal of Physics B: Atomic, Molecular and Optical Physics
The significance of permanent electric dipoles in second harmonic generation is considered with regard to their role in both the non-linear susceptibility and also in the orientation of polar molecules. Under conditions of near-resonance with the first electronic excited state, the susceptibility is dominated by a two-level term governed by the difference between the ground-and excited-state dipoles; this term alsa drives the harmonic conversion in electric field-induced second harmonic
doi:10.1088/0953-4075/26/23/030
fatcat:2qbf7e7xdfdaljnq3x3h7wwqga