cw phase-locked array Ga0.25In0.75As0.5P0.5-InP high power semiconductor laser grown by low-pressure metalorganic chemical vapor deposition

Abstract
Continuous and pulsed phase-locked operation of a high power GaInAsP-InP semiconductor laser emitting at 1.3 μm has been achieved. The laser consists of a seven-striped array of ridge-island lasers fabricated by a two-step low-pressure metalorganic chemical vapor deposition growth technique. Linear output powers greater than 300 mW (pulsed) and 120 mW (cw) have been obtained with no facet coatings. The far-field full widths at half power, both parallel and perpendicular to the junction plane, were 3° and 45°, respectively, at 10 mW (at 20 °C) which is evidence for strong stripe-to-stripe coupling.