Experimental research on propagation of incoherent combined beams of fiber lasers in atmospheric turbulence

Wu Wuming; Yang Yi; Si Lei; Zhou Pu; Chen Jinbao

doi:10.3788/HPLPB20132501.0003

Volume 25 Issue 01

Dec. 2012

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(01): 3-4

Chen Han, Yang Hanwu, Zhang Zicheng, et al. Transverse capacitance coupling UV pre-ionization switch[J]. High Power Laser and Particle Beams, 2013, 25: 2035-2039. doi: 10.3788/HPLPB20132508.2035

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Wu Wuming, Yang Yi, Si Lei, et al. Experimental research on propagation of incoherent combined beams of fiber lasers in atmospheric turbulence[J]. High Power Laser and Particle Beams, 2013, 25: 3-4. doi: 10.3788/HPLPB20132501.0003

Chen Han, Yang Hanwu, Zhang Zicheng, et al. Transverse capacitance coupling UV pre-ionization switch[J]. High Power Laser and Particle Beams, 2013, 25: 2035-2039. doi: 10.3788/HPLPB20132508.2035

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Experimental research on propagation of incoherent combined beams of fiber lasers in atmospheric turbulence

doi: 10.3788/HPLPB20132501.0003

1.
College of Opto-electric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Received Date: 2012-05-09
Rev Recd Date: 2012-10-12
Publish Date: 2013-01-15

Abstract

Abstract

The paper presents experimental results of the propagation performance of incoherent combined beams of six 100-watt single-mode fiber lasers. The waist size of each laser beam increases from 9 mm to 90 mm when it propagates through the beam expander. The six optical axes of fiber lasers in an array are controlled using individually controlled tip-tilt mirrors. The laser array is propagated to the target at a range of 470 m by a 440-mm beam director in strong and weak atmospheric turbulence. With the decrease in the intensity of turbulence, the ratio of the power in bucket to the total power on the target increases. And the increase ratio due to tip-tilt correction is about 1.7.
- fiber laser,
- incoherent combining,
- atmospheric turbulence,
- tip-tilt correction

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