An Inexpensive System for Live Stroboscopic Holographic Interferometry

Incoherent Holographic Interferometry

Resonant Holographic Interferometry, An Innovative Technique For Combustion Diagnostics

This synopsis discusses our development efforts in the area of resonant holographic interferometry (RHI). RHI is a completely nonintrusive optical diagnostic suitable for a wide range of gas dynamic investigations. As described in previous reports, RHI is a hybrid technique that combines the multi-dimensional imaging capability of holography, the phase sensitive detection of interferometry, and...

Holographic diversity interferometry for optical storage.

This study proposes holographic diversity interferometry (HDI), a system that combines information from spatially dispersed plural image sensors to reconstruct complex amplitude distributions of light signals. HDI can be used to generate four holographic interference fringes having different phases, thus enabling optical phase detection in a single measurement. Unlike conventional phase-shiftin...

Holographic interferometry for the study of liquids

Holography is an optical technique enabling to record phase objects. Holographic interferometry uses this faculty to make a phase object interfere with a memory of itself at a preceding time, recorded on a hologram. Interference fringes therefore inform on any variation of the phase of the object. For the study of liquids, these phase changes can result from the evolution of temperature or conc...

In-line digital holographic interferometry.

An optical system based on in-line digital holography for the evaluation of deformations is described. In-line holograms are recorded on a CCD chip. The problem of overlapping twin images typical for the in-line arrangement is solved by digital reconstruction and filtering of the unwanted wave fronts. Two separate interferograms of an object under test in its undeformed and deformed states are ...