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Interferometric stitching method for testing cylindrical surfaces with large apertures
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DOI：10.1364/OE.428713.png)
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摘要
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Cylindrical surfaces widely used in high-energy laser systems can have nearly semi-meter-scale dimensions, and aperture angles can exceed R/3. State-of-the-art interferometric stitching test methods involve stitching only along the arc direction, and the reported dimensions of similar to 50 x 50 mm(2) are far smaller than those required in high-energy laser systems. To rectify this limitation, an interferometric stitching method for cylindrical surfaces with large apertures is proposed. Moreover, a subaperture stitching algorithm that can stitch along both the linear and arc directions is developed. An interferometric stitching workstation equipped with a six-axis motion stage and a series of computer-generated holograms is established, where cylindrical surfaces with R/# values as large as R/0.5 and apertures up to 700 mm can be tested based on the theoretical analysis. A convex cylindrical surface with a 350 x 380 mm(2) aperture is tested to validate the proposed method's feasibility in enlarging the testable aperture of cylindrical surfaces significantly from Phi 50 mm to Phi 700 mm, thereby promoting the application of large cylindrical surfaces in high-energy laser systems. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keyword:
DISTURBING DIFFRACTION ORDERS
COMPUTER-GENERATED HOLOGRAMS
MISALIGNMENT ABERRATIONS
CALIBRATION
ERROR
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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引用论文
Fiber reference misalignment induced error in cylindrical wave interferometry.png)
OPTICS EXPRESS
OAAI
OPTICS EXPRESSIF3.3
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