| Download | - View final version: Small-block frequency estimators to control step size in phase-shifting interferometry (PDF, 1.6 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1088/1681-7575/ad6325 |
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| Author | Search for: Leroux, Ian D.1; Search for: Eves, Brian J.1ORCID identifier: https://orcid.org/0000-0003-2481-0334 |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Format | Text, Article |
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| Subject | phase-stepping interferometry; phase-shifting interferometry; frequency estimation; modified covariance method; Carré algorithm; real sinusoid; phase measurement |
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| Abstract | We derive an estimator for the step size in phase-shifting interferometry. Using a minimum of five samples, it avoids the occasional indeterminate results that afflict the traditional Carré step-size estimate. The estimator can be understood as a generalization of the modified-covariance frequency estimator for a real-valued sinusoid with an unknown mean. We describe its use in the NRC Gauge Block Interferometer for monitoring the motion of a phase-shifting mirror mount. |
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| Publication date | 2024-08-13 |
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| Publisher | IOP Publishing |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 3e1bba7f-e313-41de-93ed-272b10f102e0 |
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| Record created | 2024-08-27 |
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| Record modified | 2024-08-27 |
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