美国空军试图于1972年末,在凯特兰空军基地用气动激光器击落无人靶机。以往关于以激光击落靶机之说,纯系谣传,此事迄今尚未发生。将此种大型激光器的数万瓦连续波输出聚焦成16微弧度的光束,已将3.2公里距离外的厚木板(译注:通常厚5厘米至15厘米,宽22厘米以上)点燃。但此种 The U.S. Air Force attempted to shoot down the unmanned target aircraft with a pneumatic laser at the Katland Air Force Base in late 1972. In the past on the laser shooting down the target machine that pure rumor, so far this has not happened. The tens of thousands of watts of continuous wave output of such a large laser is focused into a beam of 16 microradians, which has ignited a thick plank of 3.2 km away from the usual thickness of 5 cm to 15 cm and a width of 22 cm. But this kind