Phase-locked arrays of semiconductor lasers are potentially useful for obtaining high-power injection lasers having low-beam divergence.1 However, conventional single-contact laser arrays exhibit far-field patterns that vary at different pumping levels and differ from device to device. Attributing these deficiencies to possible nonuniformities among the array elements, we have recently developed laser arrays in which each laser is biased independently of the others.2

© 1984 Optical Society of America

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