title: Self-pumped phase conjugation with nanosecond pulses in strontium barium niobate.
abstract: We report the observation of self-pumped phase conjugation by means of internal reflection in a photorefractive medium produced by a series of intense nanosecond pulses. Nanosecond pulses from a YAG laser ranging in intensity from 9 x 10(4) to 9 x 10(5) W/cm(2) were used. The crystal was rhodium-doped strontium barium niobate. The conjugate signal began with the first pulse, and the time to reach 63% of its equilibrium value scaled as I(-2). The equilibrium reflectivity was 29%. A similar cw experiment with the 514-nm line of an argon laser produced a response time that scaled as I(-1.1).
authors.forename: B
authors.initials: B
authors.lastname: Monson
authors.forename: G J
authors.initials: GJ
authors.lastname: Salamo
authors.forename: A G
authors.initials: AG
authors.lastname: Mott
authors.forename: M J
authors.initials: MJ
authors.lastname: Miller
authors.forename: E J
authors.initials: EJ
authors.lastname: Sharp
authors.forename: W W
authors.initials: WW
authors.lastname: Clark Iii
authors.forename: G L
authors.initials: GL
authors.lastname: Wood
authors.forename: R R
authors.initials: RR
authors.lastname: Neurgaonkar