New Oxide VCSEL presentation

A new presentation of an Oxide-Confined Vertical Surface Emitting Laser (HCG-VCSEL) model has been uploaded. This demonstrates multimode behavior within the microcavity model and new spectral analysis features recently added to the beta version of PICS3D. Interested demo users and existing maintenance customers can contact us to get early access to the 2023 beta version and the files needed to run this example.