Transverse mode tailoring in diode lasers based on coupled large optical cavities

The key principles of transverse mode engineering in edge-emitting lasers with broadened waveguides based on coupled large optical cavity (CLOC) structures are presented. The CLOC laser design is shown to be an effective approach for reducing the optical loss, broadening the waveguide, and lowering...

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Bibliographic Details
Published in:Laser physics 2017-08, Vol.27 (8), p.86201
Main Authors: Gordeev, N Yu, Maximov, M V, Zhukov, A E
Format: Article
Language:English
Subjects:
low divergence
optical loss
optical waveguides
semiconductor lasers
single mode operation
transverse optical modes
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Summary:The key principles of transverse mode engineering in edge-emitting lasers with broadened waveguides based on coupled large optical cavity (CLOC) structures are presented. The CLOC laser design is shown to be an effective approach for reducing the optical loss, broadening the waveguide, and lowering the beam divergence. Having simulated the sensitivity of the CLOC design to variations in layer thicknesses and compositions we have shown its high robustness. Advanced versions of the CLOC laser structures having two extra passive waveguides have been treated and shown to effectively eliminate several transverse modes. We have considered an application of the CLOC concept for waveguides with shifted active regions aimed at reducing laser thermal and electric resistances.
ISSN:1054-660X
1555-6611
DOI:10.1088/1555-6611/aa7cdc