Title :
Polarization dependent four-wave-mixing and two-photon coherence in solids
Author :
Sheik-Bahae, M. ; Wang, J. ; Canto-Said, E.J. ; DeSalvo, R. ; Hagan, D.J. ; VanStryland, E.W.
Author_Institution :
Dept. of Phys. & Astron., New Mexico Univ., Albuquerque, NM, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
Polarization dependent degenerate-four-wave-mixing experiments on semiconductors (ZnSe, CdS) and dielectrics (NaCl, PbF2) reveal the essential mechanisms of the bound-electronic χ(3) . We show, for the first time, that the observed anomalous dispersion of the polarization dependent phase-conjugate reflectivity can be explained using a simple 3-band model. The near vanishing reflectivity in the two-photon coherence geometry is shown to be a consequence of the interference between transitions originating from heavyand light-hole valence bands. We also present measurements on the polarization dichroism of the nonlinear refractive index (n2), in good agreement with this simple theory
Keywords :
II-VI semiconductors; cadmium compounds; dichroism; dielectric materials; lead compounds; multiwave mixing; nonlinear optical susceptibility; optical phase conjugation; reflectivity; refractive index; sodium compounds; two-photon processes; zinc compounds; 3-band model; CdS; NaCl; PbF2; ZnSe; anomalous dispersion; degenerate-four-wave-mixing experiment; four-wave-mixing; heavy-hole valence bands; interference; light-hole valence bands; nonlinear refractive index; polarization dependent phase-conjugate reflectivity; polarization dichroism; reflectivity; solids; two-photon coherence; Geometrical optics; Gratings; Interference; Laser excitation; Nonlinear optics; Optical polarization; Optical refraction; Optical variables control; Reflectivity; Solids;
Journal_Title :
Quantum Electronics, IEEE Journal of
