Interferometer measuring in vibration performs metrology with noise-free interferometry data

Fringe print-through or phase noise has always been a problem in interferometer measurements, until now. Understand the source of the problem and various techniques used to eliminate it. QPSI acquisition mode eliminates the problem of noise in your optical metrology data, as shown here on VeriFire HD Fizeau phase-shifting interferometer from Zygo Corp.
Demonstrating the instantly improved results using QPSI optical measurement in a normally 'impossible' quality assurance environment: the Verifire HD interferometer is on a table without vibration isolation or vibration dampening, in a noisy optical manufacturing factory, with grinding machines running! But surface topography measurements of form and shape are clean and highly precise, with higher precision, time saved and greater repeatability.