chapter  12
20 Pages

Defense Applications for Nanophotonics

WithSuman Shrestha, Mohit Kumar, Aditi Deshpande, George C. Giakos

Nanophotonics is a study of characterizing, building, and manipulating optically active nanostructures and nanoparticles for producing new capabilities in instrumentation for the nanoscale, chemical and biomedical sensing, information and communication technologies, enhanced solar cells and lighting, disease treatment, environmental remediation, and many other applications. Photonics at the nanoscale, or nanophotonics, is dened as “the science and engineering of light-matter interactions that take place on wavelength and subwavelengths scale where the physical, chemical or structural nature of natural or artificial nanostructures matter controls the interactions” [1]. This eld deals with a number of important and interesting topics in optics and material structures at nanometer scale and their applications and uses in general. Nanophotonics aims at controlling the optical energy and its conversion on the nanometer-scale range by combining different properties of metals, semiconductors, polymers, and dielectric materials to create new states of light and matter. These new, combined materials formed as a result of this combination are called metamaterials. Some of the targets of the scientist in this eld are pointed out [2]:

• Controlled quantum coupling at the nanoscale • Understanding ultrafast processes at ultrasmall length scales • New routes to functional nanophotonic materials • Efcient energy transport in plasmonic nanostructures

The evolution of optical and electromagnetic computational techniques, such as boundary element methods (BEM) and nite-difference frequency domain (FDFD), contributed signicantly to the development and enhancement of already existing fabrication

CONTENTS

12.1 Introduction ........................................................................................................................ 407 12.2 Nanomaterials and Surface Plasmonics ......................................................................... 410 12.3 Design Techniques and Nanotechnologies .................................................................... 412 12.4 Defense Applications ........................................................................................................ 414 12.5 Nanophotonics in Space Defense .................................................................................... 415

12.5.1 Computational Nanophotonics with MATLAB® .............................................. 418 12.6 Conclusion ..........................................................................................................................423 References .....................................................................................................................................423