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题名:
A demodulation method for the circular carrier interferogram using phase stitching
作者: Li, Bo1; Chen, Lei1; Bian, Jiang2; Li, Yan1
刊名: OPTICS AND LASERS IN ENGINEERING
出版日期: 2011-09-01
卷号: 49, 期号:9-10, 页码:1118-1123
关键词: Optical testing ; Phase retrieval ; Circular carrier ; Fourier transform ; Phase stitching
文章类型: Article
英文摘要: The four phases stitching algorithm is proposed to demodulate the circular carrier interferogram, which can eliminate the sign ambiguity and avoid serious local errors in the Fourier transform method. A pair of orthogonal low-pass filters is used to obtain four demodulated phases with local errors concentrated in different areas, then their reliable parts are chosen and combined to get the phase without sign ambiguity by a stitching strategy, which makes a significant error suppression. Furthermore, due to the stitching strategy the sign flip location just needs to be detected approximately, therefore the detection can be done using an automatic procedure. The algorithm is validated by the numerical simulations, where the calculation precisions are better than lambda/50 with suitable carrier. Besides, an actual interferogram is analyzed and the result is in good accordance with the Zygo phase-shifting interferometer. (C) 2011 Elsevier Ltd. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: FOURIER-TRANSFORM METHOD ; FRINGE-PATTERN
收录类别: SCI
语种: 英语
WOS记录号: WOS:000293043600004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3433
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Nanjing Univ Sci & Technol, Sch Elect Engn & Optoelect Technol, Nanjing 210094, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

Recommended Citation:
Li, Bo,Chen, Lei,Bian, Jiang,et al. A demodulation method for the circular carrier interferogram using phase stitching[J]. OPTICS AND LASERS IN ENGINEERING,2011,49(9-10):1118-1123.
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