Skip to main content

Speckle interferometry with temporal phase evaluation: Optimization of imaging aperture for in-plane displacement

Buy Article:

$28.45 plus tax (Refund Policy)

Abstract:

Recently a new method to measure object shape and deformation using temporal evolution of speckles in speckle interferometry was reported. The principle behind the method is that certain parameter sensitive to shape or deformation is changed continuously and the fluctuations in the intensity of the speckles are recorded in a large number of frames. The phase data for the whole object deformation is then retrieved by inverse Fourier transformation of a filtered spectrum obtained by Fourier transformation of the signal. In this paper a theoretical evaluation of the amplitude of the signal for inplane sensitive interferometer that uses dual beam illumination is presented. It is shown that signal to noise ratio is better when the speckle size is smaller than the pixel size contrary to the normal assumption that the speckle size be matched to the pixel size.

Keywords: Interferometry; speckle interferometry; speckle phenomena

Document Type: Original Article

DOI: http://dx.doi.org/10.1078/0030-4026-00039

Affiliations: Department of Physics and Applied Optics, Rose-Hulman Institute of Technology, 5500 Wabash Avenue, Terre Haute, IN 47802, USA

Publication date: November 1, 2001

urban/361/2001/00000112/00000009/art00039
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more