Kun Liu, Wenjie Lu, Yuping Chen, and Xianfeng Chen A method was demonstrated for slowing light signals in electro-optical periodically poled lithium niobate. A forbidden band gap can be formed when the transverse electric field exceeds zero. The group velocity of a light near the band gap can be delayed via changes in electric field strength or wave ... [Appl. Phys. Lett. 97, 071104 (2010)] published Mon Aug 16, 2010.