| 摘要 |
<p>A laser apparatus consists of a laser oscillator 1, means 3 for directing the output laser radiation from the oscillator at a surface 5 the reflectivity of which varies according to a pattern to be reproduced on a work piece, and means 8 for directing light reflected from the surface into a laser amplifier 9 adapted to amplify the laser radiation, the output laser radiation from the amplifier being directed at a work piece. <IMAGE></p> |
