Large two-dimensional arrays of vertical cavity semiconductor lasers, unlike similar one-dimensional arrays, exhibit a single lasing mode because of their immunity to defects and inhomogeneities. Both experiments and theoretical study of the coherence of the arrays verified this improved performance and attributed it to possible bypass routes for the propagation of phase information in the two-dimensional structure, which ensured the locking of remote array elements even in the presence of defects.
© 1997 Optical Society of America
D. Natan, M. Margalit, and M. Orenstein, "Localization immunity and coherence of extended two-dimensional semiconductor vertical cavity-locked laser arrays," J. Opt. Soc. Am. B 14, 1501-1504 (1997)