Grating interferometer with reconstructed wave of comparison

L. E. Chetkareva

doi:10.1117/12.195937

12 December 1994 Grating interferometer with reconstructed wave of comparison

L. E. Chetkareva

Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195937
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

The grating interferometer, used for analysis of the field of the refractive index in the inhomogeneous mediums, is described. The application of a space-frequency Fourier filtration for one of two interference light beams allowed us to transform a compact scheme of a shearing grating interferometer into an interferometer with an undisturbed based beam. Some experimental results are also presented, which illustrate a possibility of application of the interferometer for diagnostic of turbulent streams of stratificated fluid. A series of interferograms of the water flows were received under laboratory conditions. On the basis of measuring the phases of radiation, travelling through the investigated medium, the following statistic characteristics of streams were calculated: a standard deviation of the phases fluctuations, a spatial structural function and a function of mutual correlation of phases of radiation, travelling through different region of a water current.

Citation Download Citation

L. E. Chetkareva "Grating interferometer with reconstructed wave of comparison", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195937

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available