arsenide

The material is a semiconductor called gallium manganese arsenide.

这种材料是一种叫做镓锰砷化物的东东。

Moreover, gallium arsenide is much more expensive than silicon in the first place.

另外，最重要的是，镓砷化物比硅贵得多。

Some common intrinsic semiconductors are single crystals of silicon, germanium, and gallium arsenide.

常用的本质半导体是硅、锗以及砷化镓等的单晶。

The crystal layer on early LEDs was gallium arsenide or gallium phosphide, which lent that reddish color.

早期LED的液晶层是砷化镓或者磷化镓做的，所以发出红光。

The light source in question is a nanoscale laser, which beams light through a gallium arsenide chip, as shown below.

我们所讨论的光源是一个纳米级的激光，它通过一个砷化镓芯片发射光线，如下图。