An omnidirectional reflector based on 1D photonic crystal of heterostructures is introduced.The lattice constant,refraction ratio and filling factor are analyzed firstly.Then a dual-band omnidirectional reflector of MWIR and LWIR is designed using Te and polyethylene.The result shows that the photonic crystal based on heterostructures can achieve omnidirectional reflection in 3.4~5.4μm and 8~12.5 μm band in the mean while,whose bandwidth can reach 49.8% and 43.1% respectively.
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赵大鹏,时家明,汪家春,袁忠才,刘必鎏.中长波红外双波段全向反射镜的设计[J].激光与红外,2008,38(5):454~457 ZHAO Da-peng, SHI Jia-ming, WANG Jia-chun, YUAN Zhong-cai, LIU Bi-liu(. Design on a Dual-band Omnidirectional Reflector of MWIR and LWIR[J]. LASER & INFRARED,2008,38(5):454~457