Special Section on Advances of Precision Optical Measurements and Instrumentation for Geometrical and Mechanical Quantities

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

[+] Author Affiliations
Chien-Sheng Liu

National Chung Cheng University, Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations, No. 168, University Road, Minhsiung Township, Chiayi County 62102, Taiwan

Kun-Wei Lin

National Central University, Department of Mechanical Engineering, Taoyuan 32001, Taiwan

Opt. Eng. 53(12), 122408 (Jun 23, 2014). doi:10.1117/1.OE.53.12.122408
History: Received March 3, 2014; Revised May 19, 2014; Accepted May 21, 2014
Text Size: A A A

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

Citation

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


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.