The laser diode control method in laser-diode-pumped solid-state laser oscillator and the oscillator

摘要

LD6 is connected plural in series, excites solid excited medium 7. Each LD6 and the pie pass circuit 15 is connected in parallel, as for each bypass circuit 15 the drive is controlled by the control circuit 14. In addition, the detector 13 is provided in each LD6, inspects the short circuit or open-circuit failure of LD with LD both ends voltage and the like. The detector 13 and the control circuit 14 is connected by the LD short circuit control circuit 11 and is controlled. When the breakdown of LD is detected by the detector 13, LD short circuit control control equipment 11 in order the bypass to do the electric current which was flowing to LD which breaks down, judges the position of LD which breaks down and sends the signal to the specified control circuit 14, operates the specified bypass circuit 15. In order that LD short circuit control control equipment 11 is based on the position of LD which breaks down, judges the position of LD which should go out in order to improve the pointing gap inside solid excited medium 7 this LD goes out you send the signal to the control circuit 14, operate the specified bypass circuit 15, specified LD go out.