| 摘要 |
The width of the output pulse of a Q-switched cavity dump laser is substantially reduced by rapidly discharging a high voltage across the cavity dump crystal with an electro-optical switch which is closed by regenerative feedback from the optical output of the laser. The switch comprises a semiconductor body in intimate contact with the cavity dump crystal and has electrodes spaced by a small gap which control discharge of the high voltage across the crystal. A small fraction of the laser output is fed back to the switch and regeneratively creates a d-c current in the semiconductor body across the gap to accelerate closure of the switch and discharge of the voltage across the crystal to produce an extremely narrow output pulse.
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