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Focusing of intense laser pulse by a hollow cone

  • Wei Yu (a1) (a2), Lihua Cao (a3) (a4), M.Y. Yu (a2) (a5), A.L. Lei (a1), Z.M. Sheng (a2) (a6), H.B. Cai (a3) (a7) (a4), K. Mima (a7) and X.T. He (a2) (a3) (a4)...


It is shown that an intense laser pulse can be focused by a conical channel. This anomalous light focusing can be attributed to a hitherto ignored effect in nonlinear optics, namely that the boundary response depends on the light intensity: the inner cone surface is ionized and the laser pulse is in turn modified by the resulting boundary plasma. The interaction creates a new self-consistently evolving light-plasma boundary, which greatly reduces reflection and enhances forward propagation of the light pulse. The hollow cone can thus be used for attaining extremely high light intensities for applications in strong-field and high energy-density physics and other areas.


Corresponding author

Address correspondence and reprint requests to: Lihua Cao, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China. E-mail:


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Focusing of intense laser pulse by a hollow cone

  • Wei Yu (a1) (a2), Lihua Cao (a3) (a4), M.Y. Yu (a2) (a5), A.L. Lei (a1), Z.M. Sheng (a2) (a6), H.B. Cai (a3) (a7) (a4), K. Mima (a7) and X.T. He (a2) (a3) (a4)...


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