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由于激光具有一系列优异的特性,而被广泛应用于工农业生产和国防建设的各个领域.下面对激光应用作些简单的介绍.一、激光应用的物理基础关于激光应用的物理基础可从如下几方面来了解:1.高亮度我们知道,一盏日光灯,它的灯管侧面发光[图1(甲)],而两头是不发光的.如果把它所发出的光能集中到灯管的一头发射出来[图1(乙)],这时单位面积上发出的光功率就增加几十倍,它的亮度也将增加几十倍.同时,还可以看到,日光灯上每个发光点都向灯管外半个平面(即180°)内发射光[图2(甲)],如果把分散在180°范围内发射
Because of the laser has a series of excellent characteristics, and is widely used in industrial and agricultural production and national defense construction in all fields. The following laser applications for some brief introduction. First, the physical basis for laser applications The physical basis for laser applications from The following aspects to understand: 1. High brightness We know that a fluorescent lamp, its lamp side of the light [Figure 1 (A)], and the two are not luminous. If the light it emits concentrated in the lamp 1] (B), then the light power emitted per unit area on the increase of dozens of times its brightness will increase by several times at the same time, you can also see that each luminous point on the fluorescent lamp All emit light within half of the plane of the lamp (ie, 180 °) [Figure 2 (A)]. If the light is scattered within a range of 180 °