In a traditional, temporal phase-shifting interferometer, a phase shifter (typically a piezo element) alters the position of the reference mirror relative to the test surface to vary the phase ...

The first beamsplitter of the interferometer can be considered as the preparation stage for sensing the phase shift. One may wonder whether there exists a different state that offers better ...

Skip to content viewer section. ABSTRACT.As part of the astrometric and phase-referenced astronomy (ASTRA) project, three new science modes are being developed for the Keck Interferometer that extend ...

Multiple frames can be acquired in many different ways. The reference in a “phase-shifting” Fizeau interferometer is shifted in accurate increments corresponding to the test surface. Such increments ...

This capability provides consistent metrology in environments that are too aggressive for conventional temporal phase shifting methods. Additionally, the interferometer is capable of capturing and ...