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Proceedings Paper

Application of DBPIP to phase errors detection in coherent beam combination
Author(s): Xiaohua Wang; Feng Shen
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Paper Abstract

A new phase sensing technique is used to beam combining, which is called DBPIP (the Displacement of the Brightest Point of the Interference Pattern). DBPIP is a method of detecting piston errors between two beams based on the far-field interference pattern. It finds the position of the brightest point of the interference pattern, and then calculates the related piston errors. The advantage of DBPIP is very convenient using to detect the piston aberration in a coherent beam combination (CBC) system. Theoretically, only a few iterations can compensate the piston error completely if we get the diffractive pattern image of enough resolution. The simulation results represent that, one iteration is enough to correct the piston error to less than λ/20; if higher accuracy is required, such as less than λ/50, two iterations is enough. Moreover, this technique can also compensate the tilt aberrations of beams in a few iterations.

Paper Details

Date Published: 12 October 2010
PDF: 9 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76564Q (12 October 2010); doi: 10.1117/12.866474
Show Author Affiliations
Xiaohua Wang, Institute of Optics and Electronics (China)
The Key Lab. on Adaptive Optics (China)
Graduate School of CAS (China)
Feng Shen, Institute of Optics and Electronics (China)
The Key Lab. on Adaptive Optics (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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