June 4, 2021

Laser interferometer uses A.C laser as the light source and thus it enables the measurements to be made over longer distance. Laser represents a source of intensively monochromatic optical energy, which can be collimated into a directional beam. The laser beam wavelength is exact and pure for highly accurate measurements. The laser interferometers utilize the

Laser stands for “Light Amplification by Stimulated Emission of Radiation”. Laser instruments are devices to produce powerful, monochromatic collimated beam of light in which the waves are coherent. The development of laser gives production of clear coherent light. The biggest advantage of this coherent light is that whole energy appears to be emanating from a