Off-resonance and non-resonant dispersion of Kerr nonlinearity for symmetric molecules [Invited] | Zendy

G. I. Stegeman | Zendy; Mark G. Kuzyk | Zendy; D. G. Papazoglou | Zendy; Stelios Tzortzakis | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Off-resonance and non-resonant dispersion of Kerr nonlinearity for symmetric molecules [Invited]

Author(s) -

G. I. Stegeman,

Mark G. Kuzyk,

D. G. Papazoglou,

Stelios Tzortzakis

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.022486

Subject(s) - physics , excited state , resonance (particle physics) , photon , dispersion (optics) , refractive index , ground state , symmetry (geometry) , atomic physics , optics , quantum mechanics , interference (communication) , nonlinear system , channel (broadcasting) , geometry , mathematics , electrical engineering , engineering

The exact formula is derived from the "sum over states" (SOS) quantum mechanical model for the frequency dispersion of the nonlinear refractive index coefficient n₂ for centrosymmetric molecules in the off-resonance and non-resonant regimes. This expression is characterized by interference between terms from two-photon transitions from the ground state to the even-symmetry excited states and one-photon transitions between the ground state and odd-symmetry excited states. When contributions from the two-photon terms exceed those from the one-photon terms, the non-resonant intensity-dependent refractive index n₂>0, and vice versa. Examples of the frequency dispersion for the three-level SOS model are given. Comparison is made with other existing theories.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research