他们还没有拿出美国电力科学研究院说需要的500万美元，这笔钱是为了通过制造更小更便宜的激光器来开发一个商业系统。
They have not yet come up with the $5 million that EPRI says will be needed to develop a commercial system, by making the lasers yet smaller and cheaper.
然而，美国普渡大学的超高速光学专家安德鲁·韦纳说，不要指望电信业者会为暗激光器敞开大门。
Don't expect telecoms to beat down the doors for dark pulse lasers, however, said Purdue University's Andrew Weiner, an expert on ultra-fast optics.
作为美国国家航空航天局和法国国家太空研究中心(French Centre National d'Etudes Spatiales,CNES)的一项联合任务，CALIPSO卫星携带着一部脉冲激光器(激光雷达)，向大气中发射短脉冲激光。
A joint mission between NASA and the French Centre National d'Etudes Spatiales (CNES), CALIPSO carries a pulsating laser (lidar) that sends short pulses of light through the atmosphere.
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