光子晶体对大气窗口波段发射辐射的抑制作用  

Suppression Effect of Photonic Crystals on Atmospheric Window Band Emission

作　　者：李进[1] 叶宏[1] 韦孟柳[1] 

机构地区：[1]中国科学技术大学热科学与能源工程系,安徽合肥230026

出　　处：《兵工学报》2010年第11期1426-1430,共5页Acta Armamentarii

基　　金：国家自然科学基金资助项目(50402009)

摘　　要：利用传输矩阵方法讨论了光子晶体对大气窗口波段发射辐射的抑制作用,讨论了多种基底材料和光子晶体材料组合及其自发辐射对抑制效果的影响。研究发现,当光子晶体的高低折射率介质分别为Si与KCl时,在3～5μm与8～14μm波段内,基底分别处于100℃的Al、SiC及假想表面,表面的发射辐射均可得到较好地抑制。对于相同基底,选择Ge与KCl作为光子晶体的组成材料,会有更好地抑制效果。The transfer matrix method was used to analyze the suppression effect of photonic crystals on atmospheric window band emission. Several combinations of substrates and photonic crystals and suppression effects of their spontaneous radiation were discussed. It is found that,when the photonic crystals are made of media of Si and KCl with high and low refractivities,and the substrates are Al,SiC and imaginary surface at 100 ℃ respectively,all the surface emissions are suppressed well in the ranges of 3 ～ 5 μm and 8 ～ 14 μm. For the same substrate,it can suppress the emissions better,if Ge and KCl are chosen as the composition materials of photonic crystals.

关 键 词：工程热物理 传输矩阵 大气窗口波段的发射辐射 光子晶体 

分 类 号：TB43[一般工业技术]