Question

First step followed in holographic technique is

Answer 1

Answer:

The first step is the recording of the interference pattern formed between the sample beam, which diffusely reflects from the object and the reference beam which is sent directly to the film. These two beams must be coherent and are normally obtained from a single laser by splitting its beam

Answer 2

Holographic technique:

• A wavefront can be recorded and then reconstructed using holography. Holography is most recognized for its use in creating three-dimensional images, but it has a variety of other uses as well.
• Any sort of wave can theoretically be hologrammed.
• A hologram is created by superimposing a second wavefront (often referred to as the reference beam) over the wavefront of interest, resulting in an interference pattern that can be recorded on a physical medium.
• The interference pattern is diffracted to reconstruct the original wavefront when only the second wavefront lights it.