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Proceedings Paper

Annular flat-top laser beam generated by an adaptive weight FFT-based iterative algorithm
Author(s): Dong Wang; Xiang Liu; Hao Wang; Jian Zhang; Liying Wu
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Paper Abstract

The generation of a variable diameter annular flat-top laser beam in the far field based on an adaptive weight FFT-based iterative algorithm (AWFFT-IA) and a phase only liquid crystal spatial light modulators (poLCSLM) is demonstrated. The iterative algorithm is used to design the needed phase distribution written on the poLCSLM for the target diameter annular flat-top laser beam shaping. The experimental results show that the method proposed can concentrates about 71% of the incident laser energy into the desired region and the root mean square error (RMSE) of the tailored flat-top intensity profile is more or less 12%.

Paper Details

Date Published: 31 January 2013
PDF: 6 pages
Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 875938 (31 January 2013); doi: 10.1117/12.2012855
Show Author Affiliations
Dong Wang, Harbin Institute of Technology (China)
Xiang Liu, Shanghai Institute of Spaceflight Control Technology (China)
Hao Wang, National Lab. of Aerospace Intelligent Control (China)
Jian Zhang, Harbin Institute of Technology (China)
Liying Wu, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 8759:
Eighth International Symposium on Precision Engineering Measurement and Instrumentation
Jie Lin, Editor(s)

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