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Title: Repeatability analysis of one-dimensional angular-measurement-based stitching interferometry

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.26.020192· OSTI ID:1461596

Recently we presented one-dimensional Angular-measurement-based Stitching Interferometry (ASI) technique for synchrotron mirror metrology coupling an autocollimator and a white light interferometer. In this work, we conduct a further study on the measurement repeatability of this technique under different conditions, e.g. different scanning time or lengths with/without system drift. The similarity between the angle measuring stitching technique in ASI and the slope integration technique in deflectometry is addressed. The analytic expression of the height repeatability is derived while the slope noise is a zero-mean uncorrelated additive noise. In addition, we use a set of typical stationary signals from the autocollimator and the white light interferometer in a real experiment to simulate numerous virtual scans for the numerical calculation of the measurement repeatability under different measurement conditions. The simulation result predicts a link between the measurement repeatability and the scanning time with a constant speed. Moreover, it indicates that the major factor affecting the repeatability of our current ASI system is the system drift error.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
No. DE-SC0012704; SC0012704
OSTI ID:
1461596
Alternate ID(s):
OSTI ID: 1469786
Report Number(s):
BNL-209029-2018-JAAM; OPEXFF
Journal Information:
Optics Express, Journal Name: Optics Express Vol. 26 Journal Issue: 16; ISSN 1094-4087
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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Surface shape determination with a stitching Michelson interferometer and accuracy evaluation journal February 2019

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