Finisar’s Vertical Cavity Surface Emitting Laser (VCSEL) technology brings together the advantages of low cost and optical efficiency within a small footprint.
VCSELs are space-efficient laser sources. A single-emitter of a VCSEL can be as small as a few micrometers (microns) wide and tens of microns tall, leading to practical die sizes (with pads, keep out areas etc) less than 100 micrometers in all dimensions. Adding emitters to a die for more output power is as simple as laying them out side-by-side at a certain spacing or pitch. Practical VCSEL die with hundreds of emitters and multiple Watts of output power are less than 1mm2. Additional packaging is often required however complete illumination solutions can be realized in a few millimeters square. Newer generations of VCSELs will reduce the size of the components even further.