Resonantly enhanced real hyperpolarizability.
We show theoretically and experimentally how the first hyperpolarizability of a three-level molecule at a two-photon resonance can obtain a real value with strong resonant enhancement. This phenomenon arises from destructive interference of the usually dominant imaginary parts of the resonant hyperpolarizability.
Meshulam
G
G
Berkovic
G
G
Kotler
Z
Z