23 June 2014 Numerical and experimental characterization of reducing geometrical fluctuations of laser beam based on rotating optical diffuser
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chien-Sheng Liu, 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 . Submission:
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