Diffraction-free optical beam propagation with near-zero phase variation in extremely anisotropic metamaterials. (2nd February 2015)

• Record Type: Journal Article
• Authors: Sun, Lei; Yang, Xiaodong; Wang, Wei; Gao, Jie
• Is Part Of: Journal of optics. Volume 17:Number 3(2015:Mar.)
• Publication Date: 2015-02-02
• Subjects: multilayer metamaterials -- extreme anisotropy -- diffraction-free near-zero phase variation propagation -- optical nonlocality; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/3/035101
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: Extremely anisotropic metal-dielectric multilayer metamaterials are designed to have the effective permittivity tensor of a transverse component (parallel to the interfaces of the multilayer) with zero real part and a longitudinal component (normal to the interfaces of the multilayer) with ultra-large imaginary part at the same wavelength, including the optical nonlocality analysis based on the transfer-matrix method. The diffraction-free deep-subwavelength optical beam propagation with near-zero phase variation in the designed multilayer stack due to the near-flat iso-frequency contour is demonstrated and analyzed, including the effects of the multilayer period and the material loss.