Influence of External Mirror on Modal Behavior of Twin-Stripe Index-Guided Injection Lasers

Idan Paiss, Amos Hardy

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper we use the coupled-mode theory of parallel waveguides to calculate the influence of an external mirror on the modal behavior of the AR-coated laser array. The case of twin-stripe index-guided injection lasers with separate contacts is treated in detail. We show that for asymmetrical current injection, the external cavity couples the laser's guided array modes and creates new laser-cavity modes with a better mode discrimination in favor of the one having a single far-field pattern. These results imply that multiple laser arrays might benefit from an additional external mirror and this should be investigated experimentally.

Original languageEnglish
Pages (from-to)531-534
Number of pages4
JournalJournal of Lightwave Technology
Volume9
Issue number4
DOIs
StatePublished - Apr 1991

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