Very high speed cw digital holographic interferometry
نویسندگان
چکیده
منابع مشابه
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 ...
متن کاملHigh precision deformation measurement by digital phase shifting holographic interferometry.
A digital phase shifting technique capable of quantitatively determining the phase of holographic interferometric displacement fringes is presented. This technique uses computer control to take data and calculate surface deformation. The phase value at each detector point can be calculated by taking four successive intensity data frames with the reference phase shifted between each frame. The d...
متن کاملA Very High-Speed Digital Number Sieve
such that N is a solution to s of the congruences. (It is, of course, clear that no Ar can be a solution to more than s of the congruences (1).) Examples : On the one extreme there is the Sieve of Eratosthenes for finding all primes p in the range A = B12 ^ p < B, where ti = m, — 1 for all i. (Here to, are all the primes < Bl .) On the other extreme there is the Chinese remainder type of proble...
متن کاملColor Holographic Interferometry (from Holographic Plates to Digital Holography)
ABSTRACT: We propose to detail a comparison of optical non invasive techniques using panchromatic holographic plates and digital holography for analyzing unsteady wake flows. Few years ago, ONERA developed optical methods based on real-time three-wavelength holographic interferometry using transmission and reflection holographic plates. These techniques combine the advantages of differential in...
متن کاملMeasuring the deposited energy from a non-ionizing laser beam in water by digital holographic interferometry
Digital Holographic interferometry is a powerful and widely used optical technique for accurate measurement of variations in physical quantities such as density, refractive index, and etc. In this study, an experimental digital holographic interferometry setup was designed and used to measure the amount of energy changes induced by absorption of radiation from a non-ionizing infrared laser beam...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2006
ISSN: 1094-4087
DOI: 10.1364/oe.14.009709