Accession Number:

AD1057982

Title:

Optical Physics and Imaging Science (12.5): Nonlocal Plasmonic Metamaterials for Ultrafast and Nonlinear Optics

Descriptive Note:

[Technical Report, Final Report]

Corporate Author:

University of Massachusetts - Lowell

Report Date:

2015-11-09

Pagination or Media Count:

148

Abstract:

The three-year program was focused on analysis of light interaction with complex multiscale plasmonic structures, nanorod metamaterials that offer unique platform to realize low-loss hyperbolic media, uniaxial materials with components of permittivity tensor of different sign, enabling sub-diffraction light manipulation. Over first two years of the program we have shown that the optical properties of nanorod metamaterials are strongly affected by optical nonlocality caused by collective excitation of plasmonic modes supported by individual nanorods, developed analytical description of the underlying physics, and verified it in experiments. Over the third year of the program the research was mostly focused on understanding emission in nonlocal nanorod arrays and on nonlinear response of these unique systems. Theoretically, the two groups have developed formalism to interaction of emitted light with complex plasmonic structures, and used the developed formalism to analyze emission inside bulk nanowire media as well as emission inside finite-sized nanorod composites. In terms of nonlinear response of metamaterials, we have numerically analyzed second- and third-order nonlinearities in plasmonic nanorod arrays. Experimentally, emission inside nanorod metamaterial was investigated. Nonlinear processes inside nanorod arrays were experimentally studied. The program resulted in 10 publications with several more in preparation, one M.S. and one Ph.D. theses, and over 30 conference presentations, including over 20 invited talks.

Subject Categories:

  • Statistics and Probability
  • Optics
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

[A, Approved For Public Release]