Abstract
High power visible laser diodes are needed for applications such as pumping of tunable Cr-doped solid-state lasers. However, high diode threshold current densities (>800 A/cm2) have severely limited such utilization. We report results of strained-layer, single quantum well, graded-index separate confinement heterostructure (GRINSCH) visible laser diodes which have produced outputs of 475 mW cw and nearly 1 W pulsed at 30°C. These accomplishments were achieved by reducing the cw threshold current density below 375 A/cm2, less than half the previously reported lowest cw value (1).
© 1991 Optical Society of America
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