Improving coherent contrast of petawatt laser pulses

被引:68
|
作者
Hooker, Chris [1 ]
Tang, Yunxin [1 ]
Chekhlov, Oleg [1 ]
Collier, John [1 ]
Divall, Edwin [1 ]
Ertel, Klaus [1 ]
Hawkes, Steve [1 ]
Parry, Bryn [1 ]
Rajeev, P. P. [1 ]
机构
[1] Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England
来源
OPTICS EXPRESS | 2011年 / 19卷 / 03期
关键词
TEMPORAL CONTRAST; OPTICAL PULSES; AMPLIFICATION; GENERATION;
D O I
10.1364/OE.19.002193
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report on an experimental study of the "coherent" contrast feature that frequently appears in petawatt(PW)-class laser pulses as an exponentially-rising pedestal within a few tens of picoseconds of the compressed pulse. We show that scattering from the diffraction gratings in the stretcher is the principal source of this feature. Replacing the gratings by new, higher-quality components resulted in an order-of-magnitude reduction in the intensity of the pedestal. (C) 2011 Optical Society of America
引用
收藏
页码:2193 / 2203
页数:11
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