Investigation of a laser electron-beam tube under scanning conditions

An investigation was made of the principal characteristics of a laser electron-beam tube when the beam parameters and scanning velocity were varied. This velocity determined the laser radiation parameters. In the range ν < ν ⁰_sc the effects associated with the temperature gradient in the excited part of the screen played an important role. In the range ν > d/τ there was a reduction in the laser output power and associated increase of the threshold which occurred because the time needed to excite a single element of the cadmium sulfide screen became less than the nonequilibrium carrier lifetime. The minimum threshold and the maximum efficiency were observed in the range ν ⁰_sc < ν < d/τ.