Application of digital holographic methods to nano-displacement's measurements

This paper presents the comparison between classical and digital holorgraphic interferometry. The advantage of digital holography was demonstrated as well. Some new digital holographic methods were developed to expand the abilities of holographic measurements and displaying the results. All steps of recording, calculation and displaying the results of measurements were analyzed and, the estimate to requirements of recording systems has been made. The problems of automation the holographic measurements, hardware and software for full automation digital holographic measurement system were carefully investigated. In practice examples of applications the holographic measurements systems in mechanics, measurements techniques, optical and physical testing have been demonstrated. As a result, such kind of holographic systems can be used to measure nano-displacement of real objects.