VISIBLE AND INFRARED RADIATION EMITTED BY LASER-PLASMA MICROBUNCHES

An experiemental investigation was made of the structure and radiative characteristics of laser plasma microbunches near Al, In, and Cd targ ets at atmospheric pressure of air and laser radiation power densities up to 12 GW cm-2 (lambda = 1.06 mum). A linear relationship was found between the spectral density of the plasma radiation and the power de nsity of the incident laser radiation. The spectral density of the pla sma radiation and its distribution in the spectral interval 0.3-10 mum were determined. The efficiency of conversion of the laser radiation into the radiation emitted by the cadmium target plasma increased by a large factor in the interval 2-4 mum.