Title :
Real first hyperpolarizability in the two-photon resonance regime
Author :
Berkovic, Garry ; Meshulam, G. ; Kotler, Z.
Author_Institution :
Photonic Mater. Group, Soreq Nucl. Res. Center, Yavne´el, Israel
Abstract :
Summary form only given. Unique optical phenomena can arise in multilevel systems due to interference between the linear and/or nonlinear polarizability properties of quasi-degenerate states. Although resonant nonlinear polarizabilities are generally dominated by their imaginary part, we demonstrate here how the first hyperpolarizability of a 3-level molecule at resonance can become real valued as a result of destructive interference between two much stronger imaginary parts.
Keywords :
nonlinear optics; polarisability; resonant states; two-photon processes; 3-level molecule; destructive interference; imaginary part; imaginary parts; interference; multilevel systems; nonlinear polarizability; optical phenomena; quasi-degenerate excited states; quasi-degenerate states; real first hyperpolarizability; resonance; resonant nonlinear polarizabilities; three level system; two-photon resonance regime; Frequency; History; Interference; Optical polarization; Photorefractive effect; Polymers; Predictive models; Resonance; Stationary state; Velocity measurement;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-663-X
DOI :
10.1109/QELS.2001.961965
