Please use this identifier to cite or link to this item:
|Title:||Surface profiling of a transparent object by use of phase-shifting Talbot interferometry|
|Authors:||Thakur, M. |
|Citation:||Thakur, M., Tay, C.J., Quan, C. (2005-05-01). Surface profiling of a transparent object by use of phase-shifting Talbot interferometry. Applied Optics 44 (13) : 2541-2545. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.44.002541|
|Abstract:||Talbot interferometry is used to study the surface profile of a transparent object. Periodic patterns are produced by illuminating a grating with a collimated laser beam. The object is placed on the self-image plane of the grating. The deformed grating image, which interferes with another grating, results in the Talbot interferometric fringes. The fringe pattern is recorded on a CCD camera for subsequent analysis, and the phase variation is achieved by a linear translation stage. In this application two specimens are tested to demonstrate the validity of the method; one is a transparent object with a spherical shape with a height of less than 350 μm, and the other is a transparent object with an uneven surface of 50 μm average height. The experimental results are compared with the test results obtained with the mechanical stylus method. © 2005 Optical Society of America.|
|Source Title:||Applied Optics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 17, 2018
WEB OF SCIENCETM
checked on Oct 10, 2018
checked on Oct 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.