Abstimmbares Interferometer

摘要

The aim of the invention is to provide an improved interferometer which does not require a drive mechanism for moving a reference surface or a measuring object for tuning same interferometer and which can be tuned virtually without vibrations, thus avoiding inaccurate measurements. To this end, the interferometer (10) comprises at least one light source, a reference surface (40), a measuring object (50) and at least one beam splitter (30). For tuning to be vibration-free, the interferometer (10) further comprises a device (60, 70) for polarizing the beams to be interfered in such a way that at the output of the interferometer (10) the states of polarization of said beams differ from each other, as well as an analyzer (80) positioned at said output of the interferometer (10), the state of polarization of which analyzer can be altered in a predefined manner. In accordance with its state of polarization, said analyzer introduces a defined Pancharatnam phase into the beams to be interfered so as to tune the interferometer (10).