0°-phase-shift, single-lobe operation from wide-waveguide interferometric (WWI) phase-locked arrays of InGaAsP/InP (λ = 1.3 μm) diode lasers

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Abstract
The use of a close-coupled type of interferometric phase-locked array allows 10-11-element devices to operate in a single, diffraction-limited beam to 70% above lasing threshold.