With the emergence and development of mesoderm therapy, intense pulsed light, radio frequency technology and electro-optical integration technology.

most VCSELs are based on gallium arsenide semiconductor, and the emission wavelength is mainly in the near-infrared band. It is a laser that emits laser light perpendicular to the surface of the substrate. Multiple lasers can be arranged in multiple directions on the substrate to form a parallel light source or an area array light source. It is one of the main light sources in the field of optical fiber communication or optical sensing.