Supermode discrimination in diffraction-coupled laser arrays with separate contacts

Wilcox, J. Z.; Jansen, M.; Yang, J.; Peterson, G.; Silver, A.; Simmons, W.; Ou, S. S.; Sergant, M.
August 1987
Applied Physics Letters;8/31/1987, Vol. 51 Issue 9, p631
Academic Journal
We show that in-phase lasing is favored in diffraction-coupled arrays with separate electrical contacts for the common unguided diffraction zone and for the waveguide section, if the common unguided section is biased above a critical level. Below that level, out-of-phase lasing will be favored. By varying the current about the critical level, the far-field intensity switches from a wide far-field pattern characterized by the admixture of several supermodes, to a near-diffraction-limited single peak.


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