
Proceedings Paper
Mathematical modeling analysis on a small and compact two-dimensional CGLSI interference systemFormat | Member Price | Non-Member Price |
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Paper Abstract
When using interference wave front to detect density field, it is better to have an interference system which is small and
compact so that different directions of wave fronts can be obtained to reconstruct the density field to be detected. A twodimensional
CGLSI (Cross Grating Lateral Shearing Interferometer) system which consists of a two-dimensional cross
grating and a two-dimensional order-selecting window used as a filter is presented in this paper. Lateral shearing
interferogram of two orthogonal directions (X and Y) each other can be obtained by using this system. With the
advantage of anti-vibration and no reference surface, lateral shearing interferometer is suitable to inhibit external
environment disturbance. In this paper, analysis and simulations have been conducted on grating constant from
geometrical optics and physical optics using Fresnel approximation method respectively based on lateral shearing rate,
windows’ distance in two-dimensional order-selecting window and layout of the system which concludes the best option
for grating constant is d = 25μm . The most optimized design of size and distance for windows in two-dimensional
order-selecting window has been carried out on the basis that complex amplitude distribution can go through the filter so
that there is no distortion on wave front. All designs have gone through computer simulation and fit into the requirements
for the designs.
Paper Details
Date Published: 27 September 2013
PDF: 8 pages
Proc. SPIE 8840, Optical Modeling and Performance Predictions VI, 88400N (27 September 2013); doi: 10.1117/12.2023956
Published in SPIE Proceedings Vol. 8840:
Optical Modeling and Performance Predictions VI
Mark A. Kahan; Marie B. Levine, Editor(s)
PDF: 8 pages
Proc. SPIE 8840, Optical Modeling and Performance Predictions VI, 88400N (27 September 2013); doi: 10.1117/12.2023956
Show Author Affiliations
Published in SPIE Proceedings Vol. 8840:
Optical Modeling and Performance Predictions VI
Mark A. Kahan; Marie B. Levine, Editor(s)
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