Search for: [Abstrakt = "In standard GaAs\-based oxide\-confined vertical\-cavity surface\-emitting diode lasers \(VCSELs\), their transverse single\-fundamental\-mode operation is limited to relatively low outputs. It is a direct consequence of small radial sizes of their active regions and strong real waveguiding effects induced by their oxide apertures. Photonic crystals applied in VCSEL designing in a way shown in the present paper enable a subtle waveguiding modification leading to a considerable increase in an output of the VCSEL single\-mode operation. Unfortunately, the structure of a photonic crystal damages inside a VCSEL volume its axial symmetry, which makes rigorous simulation of its operation much more difficult. In the present paper, a simplified approach to physical \(optical, electrical and thermal\) phenomena taking place within VCSEL volumes equipped with photonic crystals is presented. Designing guidelines to obtain single\-mode\-operating photonic\-crystal\-confined VCSELs have been proposed. Various possible distributed\-Bragg\-reflector \(DBR\) output mirrors designed for various wavelengths have been analysed. From among them, GaN\-based DBRs have been found to enable higher single\-mode VCSEL outputs, especially for longer wavelengths."]

Number of results: 1