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Discussion of sources of error in laser-speckle based systems

Discussion of sources of error in laser-speckle based systems
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摘要 Applying laser-speckle techniques in material sciences as well as in methods to characterize surface con- ditions of specimen has become the method of choice, especially if a non-contacting principle is sought. This is almost always the case for specimen that are small in at least one dimension as for example in the materiM testing of foils, fibres, or micromaterials and certainly also if elevated test-temperatures are preventing standard gauges. This letter discusses in some detail sources of error that are quite often over- looked or not even considered as significant at all, but still carry the potential to introduce uncertainties well above the system design specifications. Applying laser-speckle techniques in material sciences as well as in methods to characterize surface con- ditions of specimen has become the method of choice, especially if a non-contacting principle is sought. This is almost always the case for specimen that are small in at least one dimension as for example in the materiM testing of foils, fibres, or micromaterials and certainly also if elevated test-temperatures are preventing standard gauges. This letter discusses in some detail sources of error that are quite often over- looked or not even considered as significant at all, but still carry the potential to introduce uncertainties well above the system design specifications.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第7期41-44,共4页 中国光学快报(英文版)
基金 the partial financial support for the work presented in this letter by the Austrian Research Promotion Agency the Austrian COMET Program supporting the Austrian Center of Competence in Mechatronics (ACCM)
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