Abstract

Phased arrays of semiconductor lasers are potentially able to combine the outputs of the individual array elements into a single narrow diffraction-limited beam, thus providing much higher beam power densities than may be obtained from a single semiconductor laser.¹ Most arrays reported to date have been uniform arrays in which all elements of the array have been identical. Such arrays almost invariably show double-lobed far-field patterns whose angular divergence is often several times the diffraction limit.¹

© 1985 Optical Society of America