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Two-dimensional, coherent, grating surface-emitting AlGaAs laser arrays consisting of forty (4×10)active elements have been fabricated with a multiple quantum well structure. The elements of the array are index-guided ridge lasers, connected laterally by Y-branches and coupled longitudinally with passive ridge waveguides containing second-order distributed Bragg reflectors.
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Evans et al. (1989) studied this question.
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