title: Refractive index enhancement in a far-off resonant atomic system.
abstract: We demonstrate a scheme where a laser beam which is very far detuned from an atomic resonance experiences a large index of refraction with vanishing absorption. The essential idea is to excite two Raman resonances with appropriately chosen strong control lasers.
authors.affiliation: Department of Physics, University of Wisconsin at Madison, Madison, Wisconsin, 53706, USA.
authors.forename: D D
authors.initials: DD
authors.lastname: Yavuz