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

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nonlinearity
photonics
symmetry
diffraction
excitation
critical point
momentum
oscillations
cells

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Effect of nonlinearity on dynamic diffraction and interband coupling in two-dimensional hexagonal photonic lattices. / Terhalle, Bernd; Desyatnikov, Anton S.; Neshev, Dragomir N.; Krolikowski, Wieslaw; Denz, Cornelia; Kivshar, Yuri S.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 86, No. 1, 013821, 16.07.2012.

Research output: Contribution to journalArticle

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