Numerical and experimental characterization of reducing geometrical fluctuations of laser beam based on rotating optical diffuser

Chien-Sheng Liu; Kun-Wei Lin

doi:10.1117/1.OE.53.12.122408

23 June 2014 Numerical and experimental characterization of reducing geometrical fluctuations of laser beam based on rotating optical diffuser

Chien-Sheng Liu, Kun-Wei Lin

Author Affiliations +

Funded by: National Science Council of Taiwan

Optical Engineering, Vol. 53, Issue 12, 122408 (June 2014). https://doi.org/10.1117/1.OE.53.12.122408

Abstract

The measuring accuracy of laser optical sensors is gradually degraded over time as a result of geometrical fluctuations of the laser beam. In a previous study by the present group, a method was proposed for stabilizing the laser beam by means of a rotating optical diffuser. In the present study, the effects of the key diffuser parameters, namely the rotational speed (ω), the particle radius (r), and the particle concentration (c), on the performance of the proposed system are evaluated both numerically and experimentally. The results confirm that given an appropriate setting of the three parameters, the proposed system reduces the variation of the image centroid position and improves the measuring accuracy of the laser optical sensor as a result.

Citation Download Citation

Chien-Sheng Liu and Kun-Wei Lin "Numerical and experimental characterization of reducing geometrical fluctuations of laser beam based on rotating optical diffuser," Optical Engineering 53(12), 122408 (23 June 2014). https://doi.org/10.1117/1.OE.53.12.122408

Published: 23 June 2014

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