EFFICIENT COUPLING OF HIGH-INTENSITY SUBPICOSECOND LASER-PULSES INTO SOLIDS

被引：148

作者：

MURNANE, MM

KAPTEYN, HC

GORDON, SP

BOKOR, J

GLYTSIS, EN

FALCONE, RW

机构：

[1] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720

[2] AT&T BELL LABS,HOLMDEL,NJ 07733

[3] GEORGIA INST TECHNOL,SCH ELECT ENGN,ATLANTA,GA 30332

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 10期

关键词：

D O I：

10.1063/1.108797

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a new technique for enhancing the absorption of high-intensity, ultrashort-duration laser pulses by solids. Targets consisting of gold gratings and gold clusters were found to absorb greater than 90% of the incident high-intensity laser light, This is in contrast to less than 10% absorption by flat surfaces. As a result of this strong coupling of the laser to a high-density plasma, conversion efficiency of laser energy to x rays of greater than 1% was observed for x rays above 1 keV. Efficiency of nearly 25% was observed for emissions greater than 30 eV. These conversion efficiencies are more than an order of magnitude greater than those measured from flat targets.

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页码：1068 / 1070

页数：3

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