The effect of phase mismatch on second harmonic generation in negative index materials

TL;DR

This paper investigates how phase mismatch influences second harmonic generation in negative index metamaterials, revealing significant differences from conventional materials and identifying a nonzero critical phase mismatch affecting wave interactions.

Contribution

It provides a theoretical analysis showing the unique impact of phase mismatch in negative index materials, highlighting the existence of a nonzero critical phase mismatch unlike conventional materials.

Findings

Significant difference in second harmonic generation behavior between negative and conventional index materials.

Existence of a nonzero critical phase mismatch in negative index metamaterials.

Wave interaction behavior changes dramatically when phase mismatch crosses the critical value.

Abstract

Second harmonic generation in negative index metamaterials is considered. Theoretical analysis of the corresponding model demonstrated significant difference of this phenomenon in conventional and negative index materials. In contrast to conceptional materials there is nonzero critical phase mismatch. The behavior of interacting weaves is dramatically different when phase mismatch is smaller or greater than critical value.