Authors: Insang Yoo; Ilsung Seo; Yongshik Lee
Addresses: Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea ' Agency for Defense Development, Daejeon 305-152, Korea ' Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea
Abstract: We propose easily realisable physically flat lens based on quasi-conformal transformation optical theory. To alleviate the problems of requiring complex and resonant-type metamaterials for realisation as well as for optimisation of the geometry of the transformed space, simple geometries are chosen as candidates for warped spaces. Furthermore, the paths of the rays remain conserved even in 3-dimensionally extended lens by taking an azimuthal symmetry of the calculated refractive index. Numerical simulation results verify that the proposed lens, even after structural simplification for practical implementation, performs as desired.
Keywords: transformation optics; quasi-conformal transformation; flat lens; metamaterials; warped spaces; numerical simulation.
International Journal of Nanotechnology, 2013 Vol.10 No.8/9, pp.653 - 660
Published online: 30 May 2013 *Full-text access for editors Access for subscribers Purchase this article Comment on this article