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Proceedings Paper

Novel measurement for large dimensions based on two-longitudinal mode thermal frequency-stabilized He-Ne laser
Author(s): Bin Wu; Wanfu Dong
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Paper Abstract

This paper presents a novel technology for precisely measuring dimensions of large workpieces. The two-longitudinal thermal frequency-stabilized He-Ne laser is applied as the light source and the beat wavelength for measurement basis. The beat wavelength is between 300mm~500mm and its stability can be 10-7 ~ 10-8. For phase measurement of high frequency signals, the accuracy has been improved by applying sampling frequency mixing, and precision measurement for large dimensions can be achieved.

Paper Details

Date Published: 27 November 2007
PDF: 4 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67234M (27 November 2007); doi: 10.1117/12.783651
Show Author Affiliations
Bin Wu, Chengdu Univ. (China)
Wanfu Dong, Chengdu Univ. (China)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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