interferogram

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interferogram

[‚in·tə′fir·ə‚gram]
(graphic arts)
A photograph of a shock wave or other fluid flow, produced with the aid of an interferometer, in which the displacement of interference fringes is proportional to the density change across the fluid.
(spectroscopy)
A graph of the variation of the output signal from an interferometer as the condition for interference within the interferometer is varied.
References in periodicals archive ?
For the section of film measured, the Veeco software calculated the vertical distance between both interferograms and consequently an average co-PET thickness value.
6 it is showns optical scheme for recording holographic interferograms of the vibrating spring: 1--vibrating spring; 2--high-frequency signal generator; 3--amplifier.
The satellite reached its operational orbit on 7 August and just 12 days later, its radar images were used to generate interferograms that map the topography of parts of Italy and Norway.
Polarization sensitive evaluation of the interferograms can give additional information about sample birefringence enhancing image quality.
Field engineers empirically chose some combination of commercial optical filters by checking the corresponding interferograms.
The acquisition of interferograms is performed digitally with a color CMOS camera.
The radar targets, only slightly affected by decorrelation, allow creating a set of (N) differential interferograms all referred to a unique master, regardless of temporal (even year long time spans) and normal baseline values.
These interferograms are not useful as measures of instrument performance.
The resultant interferograms are recorded as image stacks and converted into height data.
Instructions and diagrams are provided for interpreting interferograms, and for testing curved surfaces, spheres, conics, concave mirrors, and other components of an optical system.
5] overcame this limitation by measuring the phase shift between interferograms recorded with the sample placed alternately in subbeams I and II (Fig.
Spectra computed from 128 coadded interferograms (collection time -50 s) were collected continuously before and during the treatment.