How to systematically ignore image features (from a spatial light modulator)

1. How DOEs a spatial light modulator work?
2. Which beam is modulated by SLM in holographic storage?
3. What is SLM in physics?

How DOEs a spatial light modulator work?

Spatial light modulators (SLMs) are widely used as diffractive optical elements (DOEs) in optical systems to facilitate flexible control of light beams. In diffractive techniques, specific pattern is written onto the SLM by a computer and the input spatial light is modulated by the relevant pattern.

Which beam is modulated by SLM in holographic storage?

The modulated light emerging from the SLM is known as the object beam. For perfect interference of the two beams, the path length of the object beam & the reference beam from the beam splitter must be equal or the path difference should be zero[5].

What is SLM in physics?

Spatial light modulator (SLM) is a general term describing devices that are used to modulate amplitude, phase, or polarization of light waves in space and time.