High-power pulsed operation of an optimized nonplanar corrugated substrate periodic laser diode array

摘要

High-power pulsed operation of 14.1 W per uncoated facet from an optimized 3-mm-wide (510 mu m cavity length) nonplanar corrugated substrate periodic laser diode array is reported. Single-step metalorganic chemical vapor deposition growth over a selectively etched corrugated substrate provides suppressed lateral lasing and amplified spontaneous emission with a minimal number of processing steps. Higher external differential quantum efficiency, slope efficiency, and output power result from a design optimization with regard to the widths of the mesas and grooves of the corrugated substrate.