An optical diffuser absorbs a monochromatic laser beam and scatters the light into any pattern. The pattern can either be simple geometries like dot patterns, but it can also be more advanced patterns like company logos or text etc. Diffusers can be designed to generate a deterministic pattern, but also to modify the incoming light to a uniform light field.
Schematics for optical DOE Diffusers
Optical DOE diffusers are designed and fabricated to manipulate and control the phase of an input laser beam (typically Gaussian Beam). This is done to be able to generate the desired output pattern with homogenized and uniform intensity.
As it can be seen in figure, an input laser beam with a Gaussian intensity profile passes through a designed DOE diffuser and the desired output pattern (rectangular flat type intensity, in this case) can be generated at the target plane.
We support customers from design to fabrication of DOE diffuser with arbitary shape output intensity patter. These include circular and rectangular flat top profiles, diffused line, logos etc.
Our DOE diffusers are performing with higher levels of efficiency, while they are alignment insensitive to the position of the input beam.