Effect of nonlinearity on dynamic diffraction and interband coupling in two-dimensional hexagonal photonic lattices

Bernd Terhalle, Anton S. Desyatnikov, Dragomir N. Neshev, Wieslaw Krolikowski, Cornelia Denz, Yuri S. Kivshar

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We explore experimentally the effect of nonlinearity on resonant coupling between high-symmetry momentum states in hexagonal photonic lattices. We observe nonlinear Pendellösung oscillations with the power-dependent excitation of additional critical points of the same symmetry in the reciprocal cells closest to the excitation point. In contrast, the nonlinear Landau-Zener tunneling in biased lattices exhibits a sharp transition to the modulational instability with an increase of the input optical power.

Original languageEnglish
Article number013821
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number1
DOIs
Publication statusPublished - Jul 16 2012
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Effect of nonlinearity on dynamic diffraction and interband coupling in two-dimensional hexagonal photonic lattices'. Together they form a unique fingerprint.

  • Cite this