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Proceedings Paper

Femtosecond pulse laser distance and angle interferometer
Author(s): Xu Liang; Jiarui Lin; Linghui Yang; Tengfei Wu; Yang Liu; Jigui Zhu
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Paper Abstract

This paper describes a method of measuring distance and angle by dispersive interferometer using a femtosecond pulse laser. The measurement system is set up based on the modified Michelson interferometer, which combines the advantages of using retroreflector and plane-mirror reflector. The two parallel measured beams and one reference beam can undergo a mutual interference in frequency domain. The three shutters are set to two measure arms and reference arm, respectively. the shutters can be used to change the work mode of interference system. The optical path difference of distance and angle can be acquired by the modulated frequency of interference signal. Angle measurement has been compared to a calibrated rotation stage in the range of 1800 arcsec, the obtained mutual agreement is better than 3 arcsec in ordinary laboratory conditions. The results show the method has the potential for further research of absolute multiple degree-of-freedom measurements.

Paper Details

Date Published: 12 March 2020
PDF: 8 pages
Proc. SPIE 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 114390V (12 March 2020); doi: 10.1117/12.2543479
Show Author Affiliations
Xu Liang, Tianjin Univ. (China)
Jiarui Lin, Tianjin Univ. (China)
Linghui Yang, Tianjin Univ. (China)
Tengfei Wu, Tianjin Univ. (China)
Yang Liu, Tianjin Univ. (China)
Jigui Zhu, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 11439:
2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Jigui Zhu; Kexin Xu; Hai Xiao; Sen Han, Editor(s)

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