title: Gallium arsenide laser-array-on-silicon package.
abstract: A monolithic array of AlGaAs lasers has been packaged together with an array of fiber lightguides on a substrate of silicon. The components have been optimized for maximum lightguide output radiance consistent with reliable cw laser operation. Coupling efficiencies up to 80% have been achieved between laser and lightguide. Output powers up to 70 mW cw have been observed from a 50-microm core diameter lightguide of 0.15 numerical aperture. Eight-device array multispot packages have been fabricated with 10 mW/spot, limited by laser quality and thermoelectric cooler capacity. Fabrication tolerances and device electrical and optical crosstalk are discussed.
authors.forename: J D
authors.initials: JD
authors.lastname: Crow
authors.forename: L D
authors.initials: LD
authors.lastname: Comerford
authors.forename: J S
authors.initials: JS
authors.lastname: Harper
authors.forename: M J
authors.initials: MJ
authors.lastname: Brady
authors.forename: R A
authors.initials: RA
authors.lastname: Laff