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Focal‐length dependence of air breakdown by a 20‐psec laser pulse

 

作者: C. L. M. Ireland,   A. Yi,   J. M. Aaron,   C. Grey Morgan,  

 

期刊: Applied Physics Letters  （AIP Available online 1974）
卷期: Volume 24, issue 4  

页码: 175-177

 

ISSN:0003-6951

 

年代: 1974

 

DOI:10.1063/1.1655141

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The focal‐lengthfand beam‐diameterDdependence of threshold power for air breakdown has been investigated using focused ∼20‐psec 1.06‐&mgr; laser pulses. Primary spherical aberration is shown to be very important in determining the threshold power whenD/fis large. Diffusion‐type losses and self‐focusing played no part in the breakdown mechanism in the present work.

 

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