Guiding of 35 TW laser pulses in ablative capillary discharge waveguides
Guiding of 35 TW laser pulses in ablative capillary discharge waveguides
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DOI：
10.1063/1.3257909
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发表时间：
2009-11
影响因子：
2.2
通讯作者：
C. McGuffey;M. Levin;T. Matsuoka;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;A. Zigler
中科院分区：
文献类型：
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作者：
C. McGuffey;M. Levin;T. Matsuoka;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;A. Zigler
利用烧蚀驱动的毛细管放电等离子体波导，实现了30 fs，35 TW激光脉冲的传输，传输距离达3 cm，入射强度超过4× 10 ~（18）W/cm ~ 2。观察到良好导向的等离子体密度范围为1-3×1018 cm−3。输出模的光斑质量与入射模的光斑质量相似，在输入功率为35 TW时，透射能量为25%。由于高强度激光脉冲使毛细管等离子体中的碳原子和氢原子电离，透射的激光光谱通常显示出蓝移。低等离子体密度制度，这些毛细管操作，使这些设备有吸引力的单级电子加速器中使用的多个GeV的能量驱动的拍瓦级激光系统。
An ablatively driven capillary discharge plasma waveguide has been used to demonstrate guiding of 30 fs, 35 TW laser pulses over distances up to 3 cm with incident intensity in excess of 4×1018 W/cm2. The plasma density range over which good guiding was observed was 1–3×1018 cm−3. The quality of the laser spot at the exit mode was observed to be similar to that at the entrance and the transmitted energy was ∼25% at input powers of 35 TW. The transmitted laser spectrum typically showed blueshifting due to ionization of carbon and hydrogen atoms in the capillary plasma by the high intensity laser pulse. The low plasma density regime in which these capillaries operate makes these devices attractive for use in single stage electron accelerators to multi-GeV energies driven by petawatt class laser systems.