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Focusing of intense laser pulse by a hollow cone

Published online by Cambridge University Press:  12 April 2010

Wei Yu ,
Lihua Cao ,
M.Y. Yu ,
A.L. Lei ,
Z.M. Sheng ,
H.B. Cai ,
K. Mima  and
X.T. He
Wei Yu
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Shanghai, China Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China
Lihua Cao*
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, China Center for Applied Physics and Technology, Peking University, Beijing, China
M.Y. Yu
Affiliation:
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China Institute for Theoretical Physics I, Ruhr University, Bochum, Germany
A.L. Lei
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Shanghai, China
Z.M. Sheng
Affiliation:
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China Department of Physics, Jiaotong University, Shanghai, China
H.B. Cai
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, China Institute of Laser Engineering, Osaka University, Osaka, Japan Center for Applied Physics and Technology, Peking University, Beijing, China
K. Mima
Affiliation:
Institute of Laser Engineering, Osaka University, Osaka, Japan
X.T. He
Affiliation:
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China Institute of Applied Physics and Computational Mathematics, Beijing, China Center for Applied Physics and Technology, Peking University, Beijing, China
*
Address correspondence and reprint requests to: Lihua Cao, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China. E-mail: cao_lihua@iapcm.ac.cn
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Abstract

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.

Keywords

Laser-cone interactionLaser focusingParticle-in-cell simulation
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 2 , June 2010 , pp. 293 - 298
Copyright
Copyright © Cambridge University Press 2010

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