An Au nanofin array for high efficiency plasmonic optical retarders at visible wavelengths

作者：Ishii Miho; Iwami Kentaro^*; Umeda Norihiro

来源：Applied Physics Letters, 2015, 106(2): 021115.

DOI：10.1063/1.4905369

An Au nanofin array was designed and fabricated for in a microscale optical retarder with high transmittance at visible wavelengths. The array was designed on the basis of the theory of waveguides. The adopted nanocoating process realized a high aspect ratio Au structure with a period of 400 nm and a height of 800 nm. The transmittance of transverse magnetic polarized light at visible to near-infrared wavelengths exceeded 40% and a retardation of 170 degrees was achieved at 633 nm.

• 出版日期2015-1-12