Matsui Takayuki, Nomura Tsuyoshi, Miura Atsushi, Fujikawa Hisayoshi, Ikeda Naoki, Tsuya Daiju, Miyazaki Hideki T, Sugimoto Yoshimasa, Ozaki Masanori, Hangyo Masanori, Asakawa Kiyoshi
Toyota Central R&D Labs, Inc, 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan.
Opt Express. 2013 Mar 11;21(5):6153-61. doi: 10.1364/OE.21.006153.
A stacked metal-dielectric hole array (SHA) containing rectangular holes whose shape gradually varies in-plane is proposed as a means of achieving wavefront control. The dependence of the transmitted phase on the frequency can be tuned by the hole shape, in particular the length of the sides that are normal to the incident polarization. The combination of periodic holes along the polarization direction and the gradual change in hole shape normal to the polarization direction produce an inclined wavefront for 1-dimensional beam steering. An in-plane phase difference of 0.6π using an SHA with a thickness of one-sixth of the wavelength has been experimentally demonstrated.
提出了一种堆叠式金属-电介质孔阵列（SHA），其包含形状在平面内逐渐变化的矩形孔，作为实现波前控制的一种手段。透射相位对频率的依赖性可通过孔的形状进行调节，特别是垂直于入射偏振方向的边的长度。沿偏振方向的周期性孔与垂直于偏振方向的孔形状的逐渐变化相结合，可产生用于一维光束转向的倾斜波前。使用厚度为波长六分之一的SHA，已通过实验证明了面内相位差为0.6π。
