The electromagnetic properties of one-dimensional photonic crystals with two kinds of single negative(SNG) materials are investigated by the transfer matrix method.The results show that the photonic crystals have zero...The electromagnetic properties of one-dimensional photonic crystals with two kinds of single negative(SNG) materials are investigated by the transfer matrix method.The results show that the photonic crystals have zero-effective phase(zero-Φeff) gap and angular gap,which are both non-Bragg gap.The zero-Φeff gap is invariant with the incident angle and lattice scaling for different polarizations.The gap can be adjusted by varying the ratio between the two single negative materials' thickness.The angular gap is highly dependent on the incident angle and polarization,but it is insensitive to the ratio between the two single negative materials' thickness and lattice scale length.It is also found that the electric field gets extremely enhanced at the lower edge of the angular gap for transverse magnetic(TM) wave.The characteristics will have potential applications in nonlinear optical apparatus.展开更多
基金Supported by National Natural Science Foundation of China and the Natural Science Foundation of Shanxi Province ( 10704055, 10974123 and 2008011006 )the Scientific Research Foundation for the Returned Overseas Chinese Scholars of Shanxi Province(85)the Program for Young Excellent Teacher at Tongji University
基金Supported by the National Basic Research Programme of China under Grant No 2006CB921701, the National Natural Science Foundation of China under Grant Nos 10634050 and 10704055, and the Shanghai Science and Technology Committee.
基金supported by the National Natural Science Foundation of China (No.10904032)the Natural Science Foundation of Henan Educational Committee (No.2010B140005)+2 种基金the Natural Science Foundation of Shandong Province of China (No.2008A37)the Doctoral Foundation of Henan Polytechnic University (No.B2009-88)the Program for Youthful Key Teachers in Henan Polytechnic University(No.649144)
文摘The electromagnetic properties of one-dimensional photonic crystals with two kinds of single negative(SNG) materials are investigated by the transfer matrix method.The results show that the photonic crystals have zero-effective phase(zero-Φeff) gap and angular gap,which are both non-Bragg gap.The zero-Φeff gap is invariant with the incident angle and lattice scaling for different polarizations.The gap can be adjusted by varying the ratio between the two single negative materials' thickness.The angular gap is highly dependent on the incident angle and polarization,but it is insensitive to the ratio between the two single negative materials' thickness and lattice scale length.It is also found that the electric field gets extremely enhanced at the lower edge of the angular gap for transverse magnetic(TM) wave.The characteristics will have potential applications in nonlinear optical apparatus.
