Measurement of KrF laser breakdown threshold in gases

被引：40
|
作者：
Turcu, ICE
Gower, MC
Huntington, P
机构：
[1] Rutherford Appleton Laboratory, Didcot, Oxfordshire
[2] Exitech Limited, Hanborough, Oxford
来源：
OPTICS COMMUNICATIONS | 1997年 / 134卷 / 1-6期
关键词：
UV laser; KrF laser; laser breakdown in gases;
D O I：
10.1016/S0030-4018(96)00543-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
High thresholds were measured for KrF laser breakdown in several noble gases and air, at focused power densities up to 3 x 10(13) W/cm(2). The dependence between the gas pressure and the breakdown threshold is in good agreement with the inverse bremsstrahlung absorption model for the laser energy. The measured breakdown threshold for helium gas at atmospheric pressure is 5 x 10(12) W/cm(2), for an 18 ns long, 248 nm wavelength laser pulse focused to a 9 mu m spot diameter.
引用
收藏
页码：66 / 68
页数：3
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