International round-robin experiment for angle-resolved light scattering measurement

光学 镜面反射 散射 校准 积分球 栅栏 材料科学 光散射 散射计 测量不确定度 前向散射 体积热力学 相干后向散射 物理 卫星 量子力学 天文
作者
Alexander von Finck,Tobias Herffurth,Angela Duparré,Sven Schröder,Michel Lequime,Myriam Zerrad,Simona Liukaitytė,Claude Amra,Sakina Achour,Maryvonne Chalony,Q. Kuperman,Yan Cornil,Agnieszka Białek,Teresa Goodman,Claire Greenwell,Bilgehan Gür,S. Brinkers,Gerard Otter,Amir Vosteen,John C. Stover,Ramon Vink,A. Deep,Dominic Doyle
出处
期刊:Applied Optics [Optica Publishing Group]
卷期号:58 (24): 6638-6638 被引量:6
标识
DOI:10.1364/ao.58.006638
摘要

An international round-robin experiment has been conducted to test procedures and methods for the measurement of angle-resolved light scattering. ASTM E2387-05 has been used as the main guide, while the experience gained should also contribute to the new ISO standard of angle-resolved scattering currently under development (ISO/WD 19986:2016). Seven laboratories from Europe and the United States measured the angle-resolved scattering from Al/SiO2-coated substrates, transparent substrates, volume diffusors, quasi-volume diffusors, white calibration standards, and grating samples at laser wavelengths in the UV, VIS, and NIR spectra. Results were sent to Fraunhofer IOF, which coordinated the experiments and analyzed the data, while ESA-ESTEC, as the project donor, defined conditions and parameters. Depending mainly on the sample type, overall good to reasonable agreements were observed, with largest deviations at scattering angles very close to the specular beam. Volume diffusor characterization unexpectedly turned out to be challenging. Not all participants provided measurement uncertainty ranges according to the Guide to the Expression of Uncertainty in Measurement; often, a single general scatterometer-related measurement uncertainty value was stated. Although relative instrument measurement uncertainties close to 1% are sometimes claimed, the comparison results did not support these claims for specular scattering samples as mirrors, substrates, or gratings.
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