How Do You Use Laser Interferometry?
Interferometry is the study of the interference pattern created by two or more lasers. It’s commonly used in a variety of fields, especially in astronomy, physics and remote sensing. Interferometry uses the fact that the amplitude of two waves of the same frequency will add together if they’re in phase and subtract if they’re out of phase. This principle allows for the analysis of differences in the paths of the two waves. Use interferometry to improve astronomical observations. Astronomical interferometry uses two comparatively small telescopes to get high-resolution observations instead of a single very expensive telescope. Each of these telescopes is a simple interferometer. Exploit the rotation of the Earth to move the interferometer array. Interferometry can make use of a single array of stationary telescopes on the ground. This allows each telescope to make observations along different tracks over time. Conduct very long base-line interferometry by making use of the Earth’s orbit
