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Effects of turbulent flow field on wavefront aberration in liquid-convection-cooled disk laser oscillator

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Abstract

A liquid-convection-cooled Nd:YAG disk laser oscillator with an output power of 30.7 W and a slope efficiency of 14.1 % is built. By using large-eddy simulation model, the wavefront aberration induced by the turbulent flow is numerically calculated. In the experiment, a Shack–Hartmann wavefront sensor is used to measure the wavefront aberration and the laser intensity distribution. The RMS values and PV values of the beam wavefront and the phase stability of three feature points have been investigated. The experimental results prove that the turbulent flow with high flow velocity and high turbulent intensity can reduce the aberration of the flow field.

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Acknowledgments

The research was supported in part by Tsinghua University Initiative Scientific Research Program, in part by the National Natural Science Foundation of China (Grant 51021064), and in part by China Postdoctoral Science Foundation funded project (2013T60108).

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Authors and Affiliations

  1. Department of Precision Instrument, Center for Photonics and Electronics, State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China

    Peilin Li, Xing Fu, Qiang Liu & Mali Gong

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  1. Peilin Li
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  2. Xing Fu
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  3. Qiang Liu
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  4. Mali Gong
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Correspondence to Qiang Liu.

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Li, P., Fu, X., Liu, Q. et al. Effects of turbulent flow field on wavefront aberration in liquid-convection-cooled disk laser oscillator. Appl. Phys. B 119, 371–380 (2015). https://doi.org/10.1007/s00340-015-6085-1

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  • DOI: https://doi.org/10.1007/s00340-015-6085-1

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