Brillouin zone spectroscopy of nonlinear photonic lattices

Guy Bartal, Oren Cohen, Hrvoje Buljan, Jason W. Fleischer, Ofer Manela, Mordechai Segev

Research output: Contribution to journalArticlepeer-review

119 Scopus citations


We present a novel, real-time, experimental technique for linear and nonlinear Brillouin zone spectroscopy of photonic lattices. The method relies on excitation with random-phase waves and far-field visualization of the spatial spectrum of the light exiting the lattice. Our technique facilitates mapping the borders of the extended Brillouin zones and the areas of normal and anomalous dispersion within each zone. For photonic lattices with defects (e.g., photonic crystal fibers), our technique enables far-field visualization of the defect mode overlaid on the extended Brillouin zone structure of the lattice. The technique is general and can be used for photonic crystal fibers as well as for periodic structures in areas beyond optics.

Original languageEnglish (US)
Article number163902
JournalPhysical review letters
Issue number16
StatePublished - Apr 29 2005

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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