Patent ID: 7978336
Filing Date: 2011-07-12
Classification: G01B,G03H

Abstract:
1. An optical system comprising: a first optical interferometer that generates an interference phenomena between optical waves to measure a plurality of distances, a plurality of thicknesses, and a plurality of indices of refraction of a sample; a second optical interferometer optically linked to the first optical interferometer that generates a second interference phenomena between optical waves to measure a plurality of distances, a plurality of thicknesses, and a plurality of indices of refraction of the sample; a third optical interferometer optically linked to the second optical interferometer that generates a third interference phenomena between optical waves to measure a plurality of distances, a plurality of thicknesses, and a plurality of indices of refraction of the sample; an electromagnetic detector that receives an output of the first optical interferometer, the second optical interferometer, and the third optical interferometer to render an image of at least a portion of the sample; and a controller programmed reduce or eliminate undesired optical signals through a hierarchical phase unwrapping of the output of the electromagnetic detector and render a magnified image of at least a portion of the sample.