VCSEL is a semiconductor laser that emits laser beams perpendicular to the wafer's top surface, unlike an edge-fired laser, which emits the laser from the edge. VCSELs comprise laser diodes and Bragg reflector-based laser resonators with an active region formed by quantum wells. VCSELs typically operate in wavelengths ranging from 750 nanometers (nm) to 980 nm. However, technology developers can achieve longer emission wavelengths in the range of a few micrometers by altering the material properties of VCSELs. They can also fabricate high-power VCSELs by varying the aperture size of the laser emission area.
• Original equipment manufacturers (OEMs) use various topologies such as monolithically integrated, microelectromechanical systems (MEMS)-based, and wafer-fused to manufacture VCSELs.
• VCSELs offer higher beam stability and uniformity than competing technologies such as edge-emitting lasers, making the technology suitable for short-range datacom applications.
• In addition, participants can manufacture VCSELs using standard semiconductor processes, lowering additional costs for specialized tools and equipment.
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