Terahertz Compression of Electron Pulses at a Planar Mirror Membrane

被引：40

作者：

Ehberger, Dominik ^{[1
,2
]}

Mohler, Kathrin J. ^{[1
,2
]}

Vasileiadis, Thomas ^{[4
]}

Ernstorfer, Ralph ^{[4
]}

Waldecker, Lutz ^{[4
,5
]}

Baum, Peter ^{[1
,2
,3
]}

机构：

[1] Ludwig Maximilians Univ Munchen, Coulombwall 1, D-85748 Garching, Germany

[2] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany

[3] Univ Konstanz, Fachbereich Phys, Univ Str 10, D-78467 Constance, Germany

[4] Max Planck Gesell, Fritz Haber Inst, Faradayweg 4-6, D-14195 Berlin, Germany

[5] Stanford Univ, Dept Appl Phys, 348 Via Pueblo Mall, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW APPLIED | 2019年 / 11卷 / 02期

基金：

欧洲研究理事会;

关键词：

MICROSCOPY; DIFFRACTION; DYNAMICS;

D O I：

10.1103/PhysRevApplied.11.024034

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Compression of electron pulses with terahertz radiation offers short pulse durations and intrinsic subcycle stability in time. We report the generation of 12-fs (rms), 28-fs (FWHM) electron pulses at a kinetic energy of 75 keV by using single-cycle terahertz radiation and a simple planar mirror. The mirror interface provides transverse velocity matching and spatially uniform compression in time with purely longitudinal field-electron interaction. The measured short-term and long-term temporal drifts are substantially below the pulse duration without any active synchronization. A simple phase-space model explains the measured temporal focusing dynamics for different compressor strengths and shows a path toward generating isolated attosecond electron pulses from beams of almost arbitrary transverse emittance.

引用

页数：7

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