Spectral shifts and switches in random fields upon interaction with negative-phase materials

Spectral shifts in stochastic beam-like fields on interaction with layers of positive- and negative-phase materials are examined on the basis of the ABCD-matrix approach and generalized Huygens-Fresnel principle. It is found that boundaries between such materials may cause spectral switches. Effect of absorption of negative-phase materials on the beam spectrum is discussed. Our results may find applications in connection with spectrum-selection optical interconnects, spectrally encoded information transfer, image formation in systems involving negative-phase materials, and geometrically tunable metamaterials.

Figure 1

Illustrating the layered medium arrangement.

Figure 2

Spectral changes in Gaussian Schell-model beams on propagation in layers of PPM and NPM.

Figure 3

Spectral changes in Gaussian Schell-model beams on propagation in layers of PPM and NPM for several values of rms beam width.

Figure 4

Spectral changes in Gaussian Schell-model beams on propagation in layers of PPM and NPM for several values of rms coherence width.

Figure 5

Influence of absorption in layers of PPM and NPM on spectral changes in Gaussian Schell-model beams.

Figure 6

Spectral changes of Gaussian Schell-model beams on propagation in layers of PPM and NPM with absorption.