A Novel Design and Characterization of Oxide Confined 850 nm VCSEL

The present communication reports an investigation of a new kind of VCSEL with the operating wavelength at 850 nm of the electromagnetic spectrum. The efficacy of the device lies in that the oxide layer is introduced in order to achieve a better confinement of light in the central portion of the device. Further, the introduction of the low-doped DBR layers near the spacers, and the barrier reduction layers in the DBRs finally present much better efficiency of the device. Simulations have been performed for the analyses of several features of the proposed VCSEL in respect of the different controlling parameters for the device, e.g. the intensity, power and current distributions, gain response, output intensity profile, slope efficiency etc.