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Vertical Cavity Surface Emitting Lasers (VCSELs) have many advantages but their multi-mode transverse mode behaviour introduces problems for applications where output mode shape is important such as injection into fibre. Several groups world-wide have been investigating introducing photonic-crystal-hole patterns into the top-DBR to control the transverse modes. This has been observed to enhance the...
In this work I present a new semi-vectorial model for analysis of photonic-crystal VCSELs (PC-VCSELs), which is a combination of the plane-wave expansion method with the effective index approximation. It allows to consider vectorial properties of electromagnetic field in three-dimensional structures while being still much more numerically efficient than fully-vectorial methods. I show the simulation...
A new vertical-cavity surface-emitting laser structure employing a dielectric photonic crystal mirror has been suggested and been numerically investigated. The new structure has a smaller threshold gain, a moderate strength of single-transverse-mode operation, a high quality of emission beam free from the scattering, and a potential of considerably increasing the single-mode output power.
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