Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared.
由此可知利用材料在剩余射线带
折射率小于1的特性，我们可以制备出中红外区
远红外区存在禁带的光子晶体。
Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared.
由此可知利用材料在剩余射线带折射率小于1的特性，我们可以制备出中红外区远红外区存在禁带的光子晶体。
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