Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
Add more filters










Database
Language
Publication year range
1.
Opt Express ; 16(25): 20266-71, 2008 Dec 08.
Article in English | MEDLINE | ID: mdl-19065165

ABSTRACT

We study experimentally nonlinear tunable magnetic metamaterials operating at microwave frequencies. We fabricate the nonlinear metamaterial composed of double split-ring resonators where a varactor diode is introduced into each resonator so that the magnetic resonance can be tuned dynamically by varying the input power. We demonstrate that at higher powers the transmission of the metamaterial becomes power-dependent and, as a result, such metamaterial can demonstrate various nonlinear properties. In particular, we study experimentally the power-dependent shift of the transmission band and demonstrate nonlinearity-induced enhancement (or suppression) of wave transmission.


Subject(s)
Magnetics , Manufactured Materials , Materials Testing , Microwaves , Models, Theoretical , Computer Simulation , Nonlinear Dynamics , Scattering, Radiation
2.
Opt Express ; 15(18): 11714-22, 2007 Sep 03.
Article in English | MEDLINE | ID: mdl-19547532

ABSTRACT

We study experimentally propagation of electromagnetic waves through a slab of uniaxial magnetic metamaterial. We observe a range of novel phenomena including partial focusing and splitting into multiple transmitted beams.We demonstrate that while some of these experimentally observed effects can be described within the approximation of an effective medium, a deeper understanding of the experimental results requires a rigorous study of internal eigenmodes of the lattice of resonators.

3.
Phys Rev Lett ; 94(20): 203902, 2005 May 27.
Article in English | MEDLINE | ID: mdl-16090248

ABSTRACT

The theory of the inverse Doppler effect recently observed in magnetic nonlinear transmission lines is developed. We explain the crucial role of the backward spatial harmonic in the occurrence of an inverse Doppler effect and draw analogies of the magnetic nonlinear transmission line to the backward wave oscillator.

SELECTION OF CITATIONS
SEARCH DETAIL
...