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arXiv 1111.2523physics.opticsphysics.plasm-ph
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巨半周期阿秒脉冲

Giant half-cycle attosecond pulses

H. -C. Wu, J. Meyer-ter-Vehn

摘要:

半周期皮秒脉冲已经从薄的光电导体中产生,当在表面上施加电场并通过短激光脉冲接通传导时。然后,晶片平面中的横向电流沿法线方向发射半周期脉冲,并且已经观察到持续时间为500 fs和峰值电场为1 e6 V/m的脉冲。在这里,我们表明,单半周期脉冲的持续时间为50和高达1 e13 V/m时,可以产生强烈的几个周期的激光脉冲照射双箔靶。聚焦到超薄箔上,所有电子都被吹出,形成一个均匀的相对论电子片。第二层,放置在后面一定距离处,反射驱动光束,但让电子直接通过。在斜入射下,束反射提供横向电流,其发射强烈的半周期脉冲。这样的脉冲甚至可以把更重的原子完全淹没。新型的阿秒泵浦探测实验将成为可能。

英文摘要:

Half-cycle picosecond pulses have been produced from thin photo-conductors, when applying an electric field across the surface and switching on conduction by a short laser pulse. Then the transverse current in the wafer plane emits half-cycle pulses in normal direction, and pulses of 500 fs duration and 1e6 V/m peak electric field have been observed. Here we show that single half-cycle pulses of 50 as duration and up to 1e13 V/m can be produced when irradiating a double foil target by intense few-cycle laser pulses. Focused onto an ultra-thin foil, all electrons are blown out, forming a uniform sheet of relativistic electrons. A second layer, placed at some distance behind, reflects the drive beam, but lets electrons pass straight. Under oblique incidence, beam reflection provides the transverse current, which emits intense half-cycle pulses. Such a pulse may completely ionize even heavier atoms. New types of attosecond pump-probe experiments will become possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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