VCSELlähteet
VCSEL sources, also known as Vertical-Cavity Surface-Emitting Lasers, are semiconductor laser diodes that emit light vertically from the surface of the chip. Unlike edge-emitting lasers which produce a beam from the side, VCSELs emit a circular, low-divergence beam from a precisely defined area. This characteristic allows for wafer-level testing and straightforward integration into two-dimensional arrays.
The basic structure of a VCSEL consists of an active region sandwiched between two highly reflective distributed
VCSELs are known for their low threshold current, high modulation speeds, and relative ease of manufacturing.