为了得到太赫兹波在二维三角晶格光子晶体中的传播特性,利用平面波展开法数值模拟了三角晶格能带结构和态密度分布,得出E偏振当填充率f=0.9069和H偏振f=0.7346时出现最大光子带隙,在f=0.8358出现最大完全光子带隙.计算表明,增加介电常数的差值,太赫兹波在三角晶格光子晶体中传播的带隙增加了,光子晶体态密度的分布验证了存在光子带隙的范围.研究结果为太赫兹波器件的开发提供了理论依据.
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