至于激光雷达，电磁波是以红外激光束的形式发射的。
In the case of lidar, the waves are in the form of an infra-red laser beam.
在激光辅助添加制造过程中，他们发射了一个红外激光束，在基板表面上就形成了熔池。
During the laser-aided additive manufacturing process, the researchers fired a beam from an infrared laser to form a melt pool on the substrate surface.
美国的一个物理学家团队通过将一束紫外激光聚焦于一小块氧分子中，发明了一种聚焦于半空中一点的红外激光束。
A team of physicists in the us has created an infrared laser beam at a point in mid air, by focusing a UV laser onto a tiny volume of oxygen molecules.
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