The process of the lateral coalescence in the MCE of InP by LPE was studied. We suggest two modes of the lateral coalescence: the "one-zipper" and the "two-zipper" growth. Dislocations are usually found in the coalescent region when the growth is in the "two-zipper" mode, however, when the growth changes to the "one-zipper" mode, even the coalescent region becomes dislocation-free.
