Ev. Alieva et al., 2ND-HARMONIC GENERATION DUE TO THE EXCITATION OF OPPOSITELY PROPAGATING SURFACE-POLARITONS ON A QUARTZ SURFACE, JETP letters, 62(10), 1995, pp. 817-821
The generation of the second harmonic (SHG) similar to 5 mu m in a dir
ection perpendicular to the surface of the sample is observed as a res
ult of the excitation of oppositely propagating surface polaritons on
quartz with a diffraction grating (18.2 mu m) by similar to 10 mu m in
frared radiation. The SHG is maximum in the region of the 10-cm(-1) ga
p, produced by the diffraction grating, on the dispersion curve for qu
artz surface polaritons. (C) 1995 American Institute of Physics.