Gian P. Bava

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We present a comprehensive fully vectorial model for the cavity eigenmodes of oxide-cofined vertical-cavity surface-emitting lasers (VCSELs) with the details of their complex structure. It includes device-inherent symmetry-breaking mechanisms like noncircular geometries and material anisotropies related to the elasto-optic and electro-optic effect. The(More)
We report the onset of wave chaos in a real-world vertical-cavity surface-emitting laser. In a joint experimental and modeling approach we demonstrate that a small deformation in one layer of the complicated laser structure changes the emission properties qualitatively. Based on the analysis of the spatial emission profiles and spectral eigenvalue spacing(More)
For an efficient analysis of the coupling characteristics of a multimode fiber device using GRIN rod lenses, it is important to consider both the third-order aberration effects of a GRIN rod lens and the actual source fiber optical power distribution. In this paper the ray tracing technique has been used with a set of point sources representing the extended(More)
A complete model to evaluate frequency conversion that is due to highly nondegenerate four-wave mixing in Fabry-Perot laser oscillators is presented; propagation effects are taken into account. Simplified expressions are obtained in the limit of perfectly reflecting mirrors that permit analytical solutions; they are in good agreement with the results of the(More)
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