激光激光是光受激辐射放大的简称,意思是通过辐射的受激发射实现光波放大.激光并不神秘,其实它就是一束光,有可见的激光如红色的、黄色的、绿色的等等:也有不可见的激光,如红外光、紫外光等等。激光与普通光不同之处是有的激光单色性很纯,有的激光亮度很高,有的激光方向性很强,有的激光相干性很好,我们说:“有的激光”的意思,是说也有的要差一些。例如对于亮 Laser laser is the abbreviation of light stimulated radiation amplification, which means that the light wave is amplified by the stimulated emission of radiation. The laser is not mysterious, in fact, it is a beam of light, visible laser such as red, yellow, green, etc. : There are also invisible lasers, such as infrared light, ultraviolet light and so on. The difference between laser and ordinary light is that some monochromatic laser is very pure, some high laser brightness, and some highly directional laser, and some good laser coherence, we say: “Some laser” means , Is to say some worse. For example, light