Accession Number : AD1026841


Title :   Nonlinear Effects in Transformation Optics-Based Metamaterial Shields for Counter Directed Energy Weapon Defense


Descriptive Note : Technical Report


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA MONTEREY United States


Personal Author(s) : Thompson,Jacob D


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/1026841.pdf


Report Date : 01 Jun 2016


Pagination or Media Count : 137


Abstract : Transformation optics is the current method used to design metamaterial structures that manipulate the path of electromagnetic radiation. This approach, however, relies upon a completely linear response of the polarization and magnetization fields with respect to incident electromagnetic field intensities. As those field intensities rise, such as from a hypothetical directed energy weapon, nonlinear effects, which are unaccounted for in a completely linear theory, are observed. In order to investigate the behavior of a transformation opticsderived structure in such a high-field intensity regime, we propose to employ an iterative solution to the Maxwell equations for such a structure, and compare these results to those of the purely linear transformation optics model. Examining the first-order results of this approach, we observe a strong dependence of response field amplitude upon the wavelength of incident radiation.


Descriptors :   directed energy weapons , electromagnetic radiation , electromagnetic fields , differential equations , Maxwells equations , wave equations


Subject Categories : Directed Energy Weapons
      Electricity and Magnetism
      Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE