The engineering behind Laser holography and working process:
In the Gabor original hologram model hologram was a record of the interference between the light diffracted by the object and a collinear background. The main problem with this model was creating three-dimensional realism in photographs. To solve this issue it is necessary that the light emitting from the source must itself be photographed. If the waves of the streaming light, with their multiple amplitudes of fast-moving crests and troughs, can be stopped or frozen for a movement and photographed, the wave pattern can then be reconstructed and will exhibit the same three-dimensional (3D) pictures as the object from which the light is reflected. The Holography accomplishes such a reconstruction by recording the phase and amplitude content of the reflected light waves of the light source. This light source is a LASER. The coherent and monochromatic nature of LASER light makes it useful for holography.
There are multiple processes to make a hologram of any object by using LASER light. Some of them are given below:
Continuous-wave laser holography:
This method uses a continuou