I'm trying to develop a way to control the "exit angle" (diffraction angle) of a monochromatic light source.
For example: taking a laser; spreading the beam; and directing the light at a piece of holographic film.
...then, depending on how the original "hologram" or diffraction grating was recorded or encoded, having the light change angle or direction slightly as it is transmitted through the film.. Basically, I'm trying to create a "holographic lens" of sorts.
Is this possible? and what resources would you recommend in figuring out how to expose or record the diffraction pattern?