Title

Understanding Diffraction Effects In Novel Systems Containing Nanostructures

Keywords

Diffraction; Nanostructures; Radiance

Abstract

The recent revelation that diffracted radiance is the fundamental quantity predicted by scalar diffraction theory, combined with the observation that radiance (not irradiance or intensity) is shift-invariant in direction cosine space, has lead to the development of a generalized linear systems formulation of non-paraxial scalar diffraction theory. Thus simple Fourier techniques can now be used to predict a variety of wide-angle diffraction phenomena. These include: (1) the redistribution of radiant energy from evanescent diffracted orders to propagating ones, (2) the angular broadening (and apparent shifting) of wide-angle diffracted orders, and (3) diffraction efficiencies predicted with an accuracy usually thought to require rigorous electromagnetic theory. In addition, this new insight and understanding has led to an empirically modified Brckmann-Kirchhoff surface scatter model that is more accurate than the classical Beckmann-Kirchhoff theory in predicting scatter effects at large incident and scattered angles, without the smooth-surface limitation of the Rayleigh-Rice vector perturbation surface scatter theory. This new understanding of non-paraxial diffraction phenomena is becoming increasingly important in the design and analysis of novel optical systems containing nano-structures.

Publication Date

11-6-2006

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

6289

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.683666

Socpus ID

33750459723 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33750459723

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