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 language | English |
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Pages (from-to) | 531-534 |
Number of pages | 4 |
Journal | Journal of Lightwave Technology |
Volume | 9 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1991 |