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27 November 2007 Novel measurement for large dimensions based on two-longitudinal mode thermal frequency-stabilized He-Ne laser
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Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 67234M (2007) https://doi.org/10.1117/12.783651
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China
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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bin Wu and Wanfu Dong "Novel measurement for large dimensions based on two-longitudinal mode thermal frequency-stabilized He-Ne laser", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67234M (27 November 2007); https://doi.org/10.1117/12.783651
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