Two-dimensional phase locked arrays of vertical-cavity semiconductor lasers by mirror reflectivity modulation

Coupling of two-dimensional (2D) vertical-cavity surface-emitting lasers (VCSELs) to give a coherent supermode is described. The top metal layer of a stained-layer InGaAs quantum well VCSEL structure was patterned laterally by depositing various metals with different optical reflectivities. This lat...

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Bibliographic Details
Published in:Applied physics letters 1991-02, Vol.58 (8), p.804-806
Main Authors: ORENSTEIN, M, KAPON, E, STOFFEL, N. G, HARBISON, J. P, FLOREZ, L. T, WULLERT, J
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Holography
Optics
Physics
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Summary:Coupling of two-dimensional (2D) vertical-cavity surface-emitting lasers (VCSELs) to give a coherent supermode is described. The top metal layer of a stained-layer InGaAs quantum well VCSEL structure was patterned laterally by depositing various metals with different optical reflectivities. This lateral reflectivity patterning defined a 2D laser array sharing the same ‘‘supercavity’’. It is shown that these 2D arrays oscillate in a stable single, coherent 2D supermode. This was achieved with a simple planar process and without significant deterioration of threshold current and efficiency relative to an equivalent broad-area VCSEL.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.105218