title: Powerful, diffraction-limited semiconductor laser using photorefractive beam coupling.
abstract: We use semiconductor laser amplifiers and a photorefractive crystal to generate a high-power, diffraction-limited laser beam at 860 nm. Using a single flared amplifier, we obtain 1.09 W in a diffraction-limited beam from 2.2 W of pump power. Using an array of flared amplifiers, we also demonstrate efficient beam coupling, showing that this technique is easily extended to semiconductor amplifier arrays.
authors.forename: S
authors.initials: S
authors.lastname: Maccormack
authors.forename: G D
authors.initials: GD
authors.lastname: Bacher
authors.forename: J
authors.initials: J
authors.lastname: Feinberg
authors.forename: S
authors.initials: S
authors.lastname: O'Brien
authors.forename: R J
authors.initials: RJ
authors.lastname: Lang
authors.forename: M B
authors.initials: MB
authors.lastname: Klein
authors.forename: B A
authors.initials: BA
authors.lastname: Wechsler