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AssigneeInternational Business Machines Corporation
InventorsGerd Hausler, Walter Jarisch, Gunter Makosch
Estimating the term…
Interferometric devices wherein two beams (the object and reference beams) interfere are rendered insensitive to deformations in the ideally planar wave fronts of the two beams by making the deformations identical through optical phase mixing. For arrangements wherein the beams to be superposed upon each other are symmetrically guided, phase symmetrized output beams are formed from a common input beam by making the input beam perpendicularly incident upon a partially reflecting hypotenuse face of a roof prism or axicon. Rays positioned symmetrically with respect to the center plane of the prism or the center axis of the axicon become mixed because the portion of each reflected by the hypotenuse face becomes superposed with the transmitted portion of the other after total reflection inside the prism or axicon, yielding two output beams with a symmetrical phase distribution with respect to the center plane of the prism or the center axis of the axicon.
In an interferometric method requiring both an input object beam and an input reference beam with substantially identical wave fronts, the steps comprising:
An optical phase mixer for generating an input object beam and an input reference beam with substantially identical wave fronts for use in inferometer apparatus, comprising:
An optical phase mixer for generating an input object beam and an input reference beam with substantially identical wave fronts for use in interferometer aparatus, comprising:
Dependencies are inferred from the claim text.