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

页码：2193 / 2203

页数：11

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