title: Generation of Coherent Light by a Moving Medium.
abstract: We show that steady nonuniform motion of a medium through an optical resonator can yield light amplification at the resonator frequency. High gain can be achieved if at the generated frequency the medium refractive index is close to zero or the medium has a very strong frequency dispersion. We also discuss an analogy between light amplification by a moving medium and the generation of sound waves when gas flows along a tube with acoustically closed-open boundaries.
authors.affiliation: Department of Physics & Astronomy, Texas A&M University, College Station Texas 77843, USA.
authors.forename: Anatoly A
authors.initials: AA
authors.lastname: Svidzinsky
authors.affiliation: Department of Physics & Astronomy, Texas A&M University, College Station Texas 77843, USA.
authors.forename: Fu
authors.initials: F
authors.lastname: Li
authors.affiliation: Department of Physics & Astronomy, Texas A&M University, College Station Texas 77843, USA.
authors.forename: Xiwen
authors.initials: X
authors.lastname: Zhang