Document Detail

Pixelated mask spatial carrier phase shifting interferometry algorithms and associated errors.
MedLine Citation:
PMID:  16799664     Owner:  NLM     Status:  PubMed-not-MEDLINE    
In both temporal and spatial carrier phase shifting interferometry, the primary source of phase calculation error results from an error in the relative phase shift between sample points. In spatial carrier phase shifting interferometry, this phase shifting error is caused directly by the wavefront under test and is unavoidable. In order to minimize the phase shifting error, a pixelated spatial carrier phase shifting technique has been developed by 4D technologies. This new technique allows for the grouping of phase shifted pixels together around a single point in two dimensions, minimizing the phase shift change due to the spatial variation in the test wavefront. A formula for the phase calculation error in spatial carrier phase shifting interferometry is derived. The error associated with the use of linear N-point averaging algorithms is presented and compared with those of the pixelated spatial carrier technique.
Bradley T Kimbrough
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  45     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-26     Completed Date:  2006-08-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4554-62     Citation Subset:  -    
College of Optical Sciences, University of Arizona, Arizona 85721, USA.
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