The essentials of the Kerr effect for polymer-stabilized blue phase liquid crystal

Optical nonreciprocity of a five-level M-type atomic optical lattice in move

“…It is well known that electromagnetically induced transparency (EIT) [1,2] is a typical quantum interference technique, which could be applied to suppress resonant absorption for low-light-level nonlinear optics. Based on EIT effects with traveling-wave laser field, there may exist many fascinating physical phenomena, such as lasing without inversion (LWI) [3,4], enhanced nonlinear Kerr effect [5], slow light [6], and light storage [7]. Yet when using a standing-wave laser to arrange atoms into an atomic photonic crystal, the periodically modulated refractive index may give rise to pronounced photonic band gaps (PBGs) [8][9][10][11].…”