We point out that 2D photonic crystals (PhCs) can support surface bands that are pinned to Dirac points. These bands can be made very flat by optimizing the parameters of the system. Surface modes are found at the interface of two different cladding materials: one is a PhC with Dirac linear dispersion for the TE mode, and the other is a PhC that has a broad TE gap at the Dirac frequency.
© 2012 Optical Society of America
Optics at Surfaces
Original Manuscript: October 26, 2012
Manuscript Accepted: November 27, 2012
Published: December 14, 2012
Dario Jukić, Hrvoje Buljan, Dung-Hai Lee, John D. Joannopoulos, and Marin Soljačić, "Flat photonic surface bands pinned between Dirac points," Opt. Lett. 37, 5262-5264 (2012)