2ND-HARMONIC GENERATION IN HIGH-TEMPERATURE NEAR-SURFACE FEMTOSECOND PLASMAS UNDER CONDITIONS OF THE RESONANCE EXCITATION OF A SURFACE ELECTROMAGNETIC-WAVE

We report on the experiments on second-harmonic generation in plasma c reated on the surface of a solid target by laser pulses with a duratio n of 200 fs and intensity of about 10(15) W/cm(2). For both s- and p-p olarized pump, an increase in the second-harmonic conversion efficienc y is observed under the conditions of resonance excitation of surface electromagnetic waves. The estimations of possible enhancement of the local held in the vicinity of the target surface are made.