Ms. Liang Tang Profile

Liang Tang

at Beijing University of Technology

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Proceedings Article | 7 March 2019 Paper

Energy analysis method of the laser tracing measurement optical system

Hongfang Chen, Liang Tang, Huixu Song, Bo Yu, Zhaoyao Shi

Proceedings Volume 11053, 110530E (2019) https://doi.org/10.1117/12.2511266

KEYWORDS: Beam splitters, Optical testing, Mirrors, Laser optics, Laser systems engineering, Visibility, Fringe analysis, Reflectivity, Laser energy

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This paper proposes an energy analysis method of the laser tracing measurement optical system. Based on the principle of the laser tracing measurement optical system, an energy model is established to analyze the effects of non-ideal optical elements on the energy of the optical system. The simulation results show that the interference pattern is the most obvious when the split ratios of the beam splitters in the interference part and the tracing part are respectively 6:4 and 7:3. Under the above split ratios, the interference signal energy values of four receivers are close to each other and the visibility of fringe pattern reaches 0.99. The visibility of fringe patterns of four interference signals is reduced when the reflectivity of all polarization beam splitters is under non-ideal conditions in an entire optical system. The non-ideality of the transmittance of the polarization beam splitters does not affect the visibility of fringe patterns. The paper provides the theoretical basis for the accuracy improvement, reliability evaluation, optical system design and the selection of optical elements of laser tracing measurement systems.

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