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英语翻译In physics,a laser is a device that emits light through

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英语翻译
In physics,a laser is a device that emits light through a specific mechanism for which the term laser is an acronym:light amplification by stimulated emission of radiation.This is a combined quantum-mechanical and thermodynamical process discussed in more detail below.As a light source,a laser can have various properties,depending on the purpose for which it is designed.A typical laser emits light in a narrow,low divergence beam and with a well-defined wavelength (corresponding to a particular color if the laser is operating in the visible spectrum).This is in contrast to a light source such as the incandescent light bulb,which emits into a large solid angle and over a wide spectrum of wavelength.These properties can be summarized in the term coherence.
在物理学中,一台雷射器是一种放射出光线通过一个具体的机制,其中任期激光是一个英文缩写:光放大,由受激发射的辐射.这是一个结合量子力学和热力学过程中更详细地讨论了下文.作为光源,激光,可以有不同的属性,这取决于目的为何,它的设计.一个典型的激光放射出光线,在一个狭窄的,低发散光束,并与一个清楚界定的波长(对应于某一特定的颜色,如果激光是在可见光谱) .这是对比的光源,如白炽灯灯泡,该物质为一体的大型立体角,并在很宽的光谱波长.这些特性可以归纳为在任期内的一致性.