Open AccessDemagnifing super resolution imaging based on surface plasmon structures
Author(s) -
Changtao Wang,
Dachun Gan,
Yanhui Zhao,
Chunlei Du,
Xiangang Luo
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.005427
Subject(s) - optics , diffraction , surface plasmon , diffraction grating , grating , surface plasmon polariton , image resolution , wavelength , spatial frequency , fourier transform , ptychography , materials science , surface plasmon resonance , fourier optics , resolution (logic) , diffraction efficiency , plasmon , physics , computer science , nanotechnology , quantum mechanics , artificial intelligence , nanoparticle
An imaging mechanism for demagnifing features above wavelength into desired images beyond the diffraction limit is proposed in this letter. The super resolution ability (about two times and even more that of diffraction limit) arises from the surface plasmon wave excitation and amplification associated with metallic grating structure. Two specifically designed masks are projected to the grating surface from both sides, at one of which the superimposed field forms the desired images. Conceptually formalism of the imaging process is presented using spatial Fourier analysis and illustrated with numerical simulations.