Analytical solutions of electromagnetic waves in focusing and magnifying cylindrical hyperlenses: Green's function approach

作者：Tapsanit Piyawath^*; Yamashita Masatsugu; Otani Chiko

来源：Optics Express, 2014, 22(1): 229-238.

DOI：10.1364/OE.22.000229

The analytical solutions of the electromagnetic waves in the inhomogeneous cylindrical hyperlens (CH) comprising concentric cylindrical layers (CCLs) with multiple point sources located either outside the structure in the focusing process or inside the core in the magnifying process are obtained by means of Green's function analysis. The solutions are consistent with FDTD simulation in both processes. The subwavelength focal spot lambda / 16.26 from two point sources with wavelength 465 nm is demonstrated in the CH made by alternating silver and silica CCLs. Our solutions are expected to be the efficient tools for designing the sub-wavelength focusing and imaging cylindrical hyperlens.

• 出版日期2014-1-13
• 单位RIKEN