Theory of second-harmonic generation from atom pairs in solids
Jacira C. B. Freitas, F. A. M. de Oliveira, S. S. Vianna +1 more
We present a theoretical study of the second-harmonic generation from pairs of two-level atoms in solids. The density-matrix formalism is used to obtain the nonlinear polarization governing the process. The second-harmonic polarization depends on the laser frequency, the interaction potential between the atoms, and the laser intensity. The signal line shape may exhibit power broadening and shift of resonances.
Physical review. B, Condensed matter•Sep 1, 1994•0 citations