February 2024

Vertical-cavity surface-emitting lasers (VCSELs) are a type of semiconductor laser that emits a circular, low-divergence beam of light perpendicular to the surface of the chip, as opposed to edge-emitting lasers that emit parallel to the chip surface. This beam quality simplifies optical system design and improves coupling efficiency. VCSELs are characterized by their unique structure, which consists of a thin layer of active semiconductor material sandwiched between two highly reflective mirrors.

Thermoelectric cooler assemblies (TEAs) offer benefits such as precise temperature control, compact size, quiet operation, and the absence of refrigerants or moving parts. Some may argue that they have limitations in terms of cooling capacity and efficiency compared to traditional refrigeration methods, however, we can demonstrate otherwise.