ABSTRACT
In this chapter, we discuss an approach to beam shaping that often has a different realm of applications than the more conventional techniques. Specifically, we discuss what is called a band-limited diffuser. Many diffusers, such as ground glass, diffuse light over an angular extent that is often larger and not as well defined as desired. We will see in this chapter that diffractive diffusers offer a technique to diffuse light over a very well-controlled angular spectral band.
