NONLINEAR NONSTATIONARY OPTICAL-RESPONSE OF A ONE-DIMENSIONAL ONE-BAND CONDUCTOR

We consider the nonlinear optical (NLO) response of a one-dimensional conductor to a nonperturbative nonstationary electric field within the one-electron one-band tight-binding approximation in the absence of r elaxation. A new effect of absence of induced polarization in an arbit rary electric field for an electron, localized initially on one site i s found. A classification of harmonic generation spectra is provided. A plateau in the harmonic spectrum is found and ways of controlling th e output spectrum with the external field are discussed. All the resul ts within the model are exact.