title: Observation of discrete diffraction patterns in an optically induced lattice.
abstract: We have experimentally observed the discrete diffraction of light in a coherently prepared multi-level atomic medium. This is achieved by launching a probe beam into an optical lattice induced from the interference of two coupling beams. The diffraction pattern can be controlled through the atomic parameters such as two-photon detuning and temperature, as well as orientations of the coupling and probe beams. Clear diffraction patterns occur only near the two-photon resonance.
authors.forename: Jiteng
authors.initials: J
authors.lastname: Sheng
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Mohammad-Ali
authors.initials: MA
authors.lastname: Miri
authors.forename: Demetrios N
authors.initials: DN
authors.lastname: Christodoulides
authors.forename: Min
authors.initials: M
authors.lastname: Xiao