• Infrared and Laser Engineering
  • Vol. 53, Issue 9, 20240249 (2024)
Yang LI1, Lei LIU1,2,*, Gang WANG1, Wentao WANG1, and Xiaojun TANG1
Author Affiliations
  • 1China Electronics Technology Group Eleventh Research Institute, Beijing 100015, China
  • 2School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
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    DOI: 10.3788/IRLA20240249 Cite this Article
    Yang LI, Lei LIU, Gang WANG, Wentao WANG, Xiaojun TANG. Simulation and experimental study of beam quality measurement for short distance transmission of high power laser[J]. Infrared and Laser Engineering, 2024, 53(9): 20240249 Copy Citation Text show less
    Schematic diagram of beam quality short-range measurement at the laser system export
    Fig. 1. Schematic diagram of beam quality short-range measurement at the laser system export
    (a) Far-field light spots under weak turbulence; (b) Far-field light spots under moderate turbulence; (c) Far-field light spots under strong turbulence
    Fig. 2. (a) Far-field light spots under weak turbulence; (b) Far-field light spots under moderate turbulence; (c) Far-field light spots under strong turbulence
    (a) \begin{document}$ C_n^2 $\end{document} influence curve on \begin{document}$ \beta $\end{document} factors; (b) \begin{document}$ \beta $\end{document} factors under different \begin{document}$ C_n^2 $\end{document}
    Fig. 3. (a) Unknown environment 'document' influence curve on Unknown environment 'document' factors; (b) Unknown environment 'document' factors under different Unknown environment 'document'
    (a) Influence curves of transverse wind speed on \begin{document}$ \beta $\end{document} factor; (b) Influence curves of relative air humidity on \begin{document}$ \beta $\end{document} factor
    Fig. 4. (a) Influence curves of transverse wind speed on Unknown environment 'document' factor; (b) Influence curves of relative air humidity on Unknown environment 'document' factor
    (a) Influence curves of beam diameter on \begin{document}$ \beta $\end{document} factor; (b) Influence curves of outgoing light power on \begin{document}$ \beta $\end{document} factor
    Fig. 5. (a) Influence curves of beam diameter on Unknown environment 'document' factor; (b) Influence curves of outgoing light power on Unknown environment 'document' factor
    The impact curve of \begin{document}$ C_n^2 $\end{document} on \begin{document}$ \beta $\end{document} factor under different initial \begin{document}$ \beta $\end{document} factors
    Fig. 6. The impact curve of Unknown environment 'document' on Unknown environment 'document' factor under different initial Unknown environment 'document' factors
    Influence curves of \begin{document}$ C_n^2 $\end{document} on \begin{document}$ \beta $\end{document} factors at different transmission distances
    Fig. 7. Influence curves of Unknown environment 'document' on Unknown environment 'document' factors at different transmission distances
    700 mm parallel light tube
    Fig. 8. 700 mm parallel light tube
    (a) Light spot of weak turbulence far field in 700 mm parallel light tube; (b) Light spot of moderate turbulence far field in 700 mm parallel light tube
    Fig. 9. (a) Light spot of weak turbulence far field in 700 mm parallel light tube; (b) Light spot of moderate turbulence far field in 700 mm parallel light tube
    Indoor changes of \begin{document}$ C_n^2 $\end{document} in different time periods
    Fig. 10. Indoor changes of Unknown environment 'document' in different time periods
    $ C_n^2 $Enormous influence
    Transverse wind speedAlmost no effect
    Relative air humidityAlmost no effect
    Beam diameterCertain implications
    Outgoing laser powerAlmost no effect
    Initial $ \beta $ factorCertain implications
    Transmission distancesCertain implications
    Table 1. The magnitude of the effect of different influences on Unknown environment 'document' factor
    Yang LI, Lei LIU, Gang WANG, Wentao WANG, Xiaojun TANG. Simulation and experimental study of beam quality measurement for short distance transmission of high power laser[J]. Infrared and Laser Engineering, 2024, 53(9): 20240249
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