DEVICE FOR THE GENERATION OF A CARRIER FOR AN INTERFEROGRAMME

摘要

The invention relates to a method for the generation of a carrier for an interferogramme in an interferometry device, either of the real-time holographic interferometry type or the double exposure holographic interferometry type, comprising: a first recording step on a hologramme of a first wave front arriving from an object (8) and generation of a second wave front, with superimposition of the two wave fronts. The invention is characterised in that said two superimposed wave fronts are orthogonally polarised, either naturally or by a modification step and in comprising a step of passing said two orthogonally-polarised wavefronts through a bifringent crystal, a polariser and a detector (9) to cause interference of said two wave fronts. The invention further relates to a device for carrying out said method.