Application of DBPIP to phase errors detection in coherent beam combination

Xiaohua Wang; Feng Shen

doi:10.1117/12.866474

12 October 2010 Application of DBPIP to phase errors detection in coherent beam combination

Xiaohua Wang, Feng Shen

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 76564Q (2010) https://doi.org/10.1117/12.866474
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

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.

Citation Download Citation

Xiaohua Wang and Feng Shen "Application of DBPIP to phase errors detection in coherent beam combination", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76564Q (12 October 2010); https://doi.org/10.1117/12.866474

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