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The design and operation of InGaAsP-InP ridge-waveguide (RW) distributed Bragg reflector (DBR) multiple quantum-well lasers with first-order surface gratings are presented. The RW DBR lasers are fabricated using only a single growth step without growth on a corrugated surface. Uncoated devices with grating etch depths of 0.6 and 0.5-/spl mu/m exhibit pulsed threshold currents of 32 and 43 mA with...
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