Double photonic bandgaps (PBGs) can simultaneously appear when double dark resonances in uniform cold atoms are spatially modulated by a resonance standing-wave. Theoretical calculations show that variable and efficient coherent optical control of the PBGs can be achieved by modulating the coupling field and standing-wave. The structures of double PBGs induced by the atomic coherence effect are better than those obtained in the photonic crystal heterostructures. We anticipate that this scheme has potential applications in optical networks for dual-channel all-optical switching or a dual-frequency optical Bragg reflector.
© 2010 Optical Society of America
Atomic and Molecular Physics
Original Manuscript: March 12, 2010
Revised Manuscript: May 11, 2010
Manuscript Accepted: June 7, 2010
Published: July 9, 2010
Shang-qi Kuang, Ren-gang Wan, Jun Kou, Yun Jiang, and Jin-yue Gao, "Tunable double photonic bandgaps in a homogeneous atomic medium," J. Opt. Soc. Am. B 27, 1518-1522 (2010)