[13a-2C-1~11] 4.1 Plasmonics

▲ [13a-2C-5] Transmission of the Double-layer Wire Grid Polarizer and its Dependence on the Incident Angle and the Periodical Structures

〇Atsushi Motogaito^1,3, Yuuta Morishita¹, Hideto Miyake^2,3, Kazumasa Hiramatsu^1,3 (1.Grad. School of Eng., Mie Univ., 2.Grad. School of Reg. Innov., Mie Univ., 3.MIE-CUTE)

Keywords:surface plasmon,wire grid polarizer,extraordinary transmission

In this study, the detail simulation and experimental results are mentioned and try to explain on the basis of the extraordinary transmission phenomena by surface plasmons. The peak angle is 30 deg. when the period is equal to 318 nm, then the maximum calculated transmittance at 30 deg. is 0.3. It is suggested that the incident light passes through the resist layer from its side wall, followed by the excitation of SPPs at the interface between the resist and Au. Subsequently, the SPPs combine with the transmitted light in the glass substrate. This results in strong transmitted light with TM polarization.