Coherent, monolithic two-dimensional (10×10) laser arrays using grating surface emission
Applied Physics Letters1988Vol. 53(22), pp. 2123–2125
Citations Over TimeTop 1% of 1988 papers
Gary A. Evans, N. W. Carlson, J. M. Hammer, M. Lurie, J.K. Butler, S. L. Palfrey, R. Amantea, Larry Carr, F. Z. Hawrylo, Eddie A. James, C. J. Kaiser, J. B. Kirk, W. Reichert, S. R. Chinn, J. R. Shealy, P.S. Zory
Abstract
Two-dimensional, coherent AlGaAs laser arrays consisting of 100 (10×10) active elements have been fabricated using single quantum well laser structures. A surface relief grating is used both for feedback and outcoupling. The elements of the array are index-guided ridge lasers. In one array design, the elements are coupled laterally by evanescent field overlap while in the second design, the coupling is by Y branches. Longitudinal coherence is achieved by injection coupling. The far field, emanating from a 60 μm by 5 mm aperture, measures 0.01°×1°. Both types of arrays emit more than 1 W peak power. The mode spectrum of the emitted power is contained in a ∼2–3 Å wavelength interval at ∼1 W.
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