Abstract

Phase-locked arrays of antiguided diode lasers have shown significant promise as high-power coherent sources.¹ The devices have been analyzed by the effective-index method (EIM),¹ for finite arrays, and by a finite-element method,² for infinite arrays. However, the EIM is invalid when more than one transverse mode is supported in the interelement regions,³ and, although the finite-element approach gives a good qualitative picture, it cannot be readily used for device design.

© 1991 Optical Society of America