Electron-beam-pumped high-power semiconductor laser

Abstract

Experiments on resistive tearing mode control in a reversed field pinch by applying a rotating magnetic field are presented. After a brief survey of tearing mode characteristics, the actions taken to prevent their detrimental effects are described. These actions consist in the generation of a rotating magnetic field able to modify the dynamic of the m = 0, n = 1 tearing mode. The rotating field is generated by superimposing an alternating current component to the current circulating in the toroidal field winding. To achieve this, the toroidal field circuit was appropriately modified. Under some conditions, the rotating field exerts a dragging torque on the helical deformation of the plasma column, produced by phase-locked m = 1 modes, so that the deformation can be either localized in a selected toroidal position or put into a continuous toroidal rotation.

Electron-beam pumping of visible and ultraviolet gas lasers

“…In reality switch and gun inductances must be included in the circuit as shewn in Fig. 41 The necessity to charge the I'll, to twice the desired gun voltage led Blumlein (116) to develop a circuit (now nam.-d after him) that is charged to only the gun voltage as shown in Pig. 42.…”

Comparative studies of fission fragment and electron beam driven solid-state lasers and reactor-laser system modeling

“…The total power output of the lasers can vary widely. Fractions [48,52], tens [49,53], hundreds [51,[54][55][56][57], thousands [50,[57][58][59][60], and millions [61,62] of Watts have been reported, however short beam pulses (on the order of ~1 ns) put total energy outputs to less than 1 J. CW lasers are difficult to construct due to the power limitations of most electron gun devices operating in steady state conditions. Typical optical power output is on the order of 1 mW [52,63].…”