Maximizing energy deposition by shaping few-cycle laser pulses

被引：7

作者：

Gateau, Julien ^{[1
]}

Patas, Alexander ^{[2
]}

Matthews, Mary ^{[1
]}

Hermelin, Sylvain ^{[1
,4
]}

Lindinger, Albrecht ^{[2
]}

Kasparian, Jerome ^{[1
,3
]}

Wolf, Jean-Pierre ^{[1
]}

机构：

[1] Univ Geneva, Grp Appl Phys, 22 Chemin Pinchat, CH-1211 Geneva 4, Switzerland

[2] Free Univ Berlin, Inst Expt Phys, Arnimallee 14, D-14195 Berlin, Germany

[3] Univ Geneva, Inst Environm Sci, Blvd Carl Vogt 66, CH-1211 Geneva 4, Switzerland

[4] Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, Inst Lumiere Matiere, F-69622 Villeurbanne, France

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2018年 / 51卷 / 13期

基金：

瑞士国家科学基金会;

关键词：

laser-plasma interactions; plasma kinetic equations; beam trapping; self-focusing; and thermal blooming; FEMTOSECOND FILAMENTATION; TRANSPARENT MEDIA; LIGHT FILAMENTS; AIR; IONIZATION; DISCHARGES; IMPACT; GASES;

D O I：

10.1088/1361-6455/aac783

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally investigate the impact of pulse shape on the dynamics of laser-generated plasma in rare gases. Fast-rising triangular pulses with a slower decay lead to early ionization of the gas and depose energy more efficiently than their temporally reversed counterparts. As a result, in both argon and krypton, the induced shockwave as well as the plasma luminescence are stronger. This is due to an earlier availability of free electrons to undergo inverse Bremsstrahlung on the pulse trailing edge. Our results illustrate the ability of adequately tailored pulse shapes to optimize the energy deposition in gas plasmas.

引用

页数：7

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