Vertical-Cavity Surface-Emitting Laser (VCSEL) Market Segmentation by Type (Multi-mode VCSEL, and Single-mode VCSEL); by Material (Gallium Arsenide, Gallium Nitride, Indium Phosphide, and Others); and by Application (Telecom, Consumer Electronics, Automotive, Medical, Industrial, Aerospace and Defense, and Others) – Global Demand Analysis & Opportunity Outlook 2031