Real-time Moiré Measurement of Phase Gradient
作者:
Klaus Schätzel,
Gareth Parry,
期刊:
Optica Acta: International Journal of Optics
(Taylor Available online 1982)
卷期:
Volume 29,
issue 11
页码: 1441-1445
ISSN:0030-3909
年代: 1982
DOI:10.1080/713820787
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Phase gradients present in an optical wavefield with constant intensity can be measured using only two identical gratings and one or more photo-detectors. For Ronchi rulings, the detector output depends linearly on the spatial derivative of the optical phase perpendicular to the grating lines. The usefulness of this set-up combined with on-line data processing is demonstrated for the study of a turbulent random phase screen.
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