Nonlinear photoelectric electron emission induced by picosecond mode-locked laser pulses

Farkas, Gy.; Horváth, Z.; Kertész, I.; Kiss, G

doi:10.1007/bf02784681

Cited by 14 publications

(1 citation statement)

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“…On the experimental side, the invention of the laser quickly led to the discovery of nonlinear photoemission; twophoton photoemission from solids was first observed in 1964 at a semiconducting Cs 3 Sb photocathode (Sonnenberg et al 1964). In Budapest, Farkas and colleagues investigated higher-order nonlinear photoemission early on with picoseond laser pulses (Farkas et al 1971, 1972, Farkas and Chin 1985, referring to Keldysh's theoretical work. Clear deviations from perturbative multiphoton emission and the onset of optical tunneling effects in electron emission from a gold surface were reported in 1991 (Tóth et al 1991).…”

Section: Early Workmentioning

confidence: 99%

Attosecond physics phenomena at nanometric tips

Krüger

Lemell

Wachter

et al. 2018

J. Phys. B: At. Mol. Opt. Phys.

112

103

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Attosecond science is based on electron dynamics driven by a strong optical electric field and has evolved beyond its original scope in gas-phase atomic and molecular physics to solid-state targets. In this review, we discuss a nanoscale attosecond physics laboratory that has enabled the first observations of strong-field-driven photoemission and recollision at a solid surface: laser-triggered metallic nanotips. In addition to the research questions of rather fundamental nature, femtosecond electron sources with outstanding beam qualities have resulted from this research, which has prompted follow-up application in the sensing of electric fields and lightwave electronics, ultrafast microscopy and diffraction, and fundamental matter-wave quantum optics. We review the theoretical and experimental concepts underlying near-field enhancement, photoemission regimes and electron acceleration mechanisms. Nanotips add new degrees of freedom to well known strong-field phenomena from atomic physics. For example, they enable the realization of a true sub-optical-cycle acceleration regime where recollision is suppressed. We also discuss the possibility of high-harmonic generation due to laser irradiation of metallic nanostructures.

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