Laser intensity effects in carrier-envelope phase-tagged time of flight-photoemission electron microscopy

Chew, Soo Hoon; Gliserin, Alexander; Schmidt, Jürgen; Bian, Huadong; Nobis, S.; Schertz, F.; Kübel, Matthias; Yang, Yingying; Loitsch, Bernhard; Stettner, Thomas; Finley, Jonathan J.; Scheffold, Christian; Ouacha, H.; Azzeer, Abdallah M.; Kleineberg, Ulf

doi:10.1007/s00340-016-6374-3

Cited by 6 publications

(4 citation statements)

References 54 publications

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“…In case of nanostructured materials, the spatial variation of the strongly localized optical near-field provides an additional control parameter for both electron emission and acceleration [17][18][19][20]. The coherent control of electron emission and acceleration with carrier-envelope phase (CEP)-controlled few-cycle laser pulses has been investigated for isolated nanospheres [19,[21][22][23], metal nanotips [24,25], and surface assembled nanostructures [26][27][28]. Characteristic nanoscale phenomena that contribute to the strong-field photoemission from these materials include (i) the transition from ponderomotive to sub-cycle electron acceleration for field localization below the scale of the electron quiver motion [29], and (ii) field propagation induced directionality of the energetic electron emission as demonstrated for nanospheres with diameters approaching the wavelength of the incident light [19].…”

Section: Introductionmentioning

confidence: 99%

All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields

et al. 2019

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Field localization by nanostructures illuminated with laser pulses of well-defined waveform enables spatio-temporal tailoring of the near-fields for sub-cycle control of electron dynamics at the nanoscale. Here, we apply intense linearly-polarized two-color laser pulses for all-optical control of the highest energy electron emission from SiO 2 nanoparticles. For the size regime where light propagation effects become important, we demonstrate the possibility to control the preferential emission angle of a considerable fraction of the fastest electrons by varying the relative phase of the two-color field. Trajectory based semi-classical simulations show that for the investigated nanoparticle size range the directional steering can be attributed to the two-color effect on the electron trajectories, while the accompanied modification of the spatial distribution of the ionization rate on the nanoparticle surface has only a minor effect.

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Section: Introductionmentioning

confidence: 99%

All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields

et al. 2019

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“…As demonstrated in [40], the step structure will give rise to more slowly varying oscillation amplitudes, which means the two conditions noted in the last paragraph can be approximately fulfilled. Nevertheless, in some cases, the PAP distribution is still different from a perfect annulus [23,38,39,46].…”

Section: The Procedures To Extract the Absolute Carrier-envelope Phasementioning

confidence: 98%

“…Experimentally, it is not always convenient to fulfill the two conditions noted above. It has been shown that the pattern of PAP distribution is sensitive to the pulse duration [46], laser intensity [38,39], and phase-volume effect [45]. The physical origin can be comprehended by the results in [40], where it was shown that, with rising E k , the oscillation amplitude of the asymmetry parameter shows a rapid rising trend until a maximum around the cutoff of ATI spectra, and a step structure appears at a relatively lower energy if an SM is employed in the CEPM for a 5.0 fs laser pulse.…”

Section: The Procedures To Extract the Absolute Carrier-envelope Phasementioning

confidence: 99%

“…In contrast, for a long acquisition time, drift of laser power (or intensity) will affect the precision of CEPM [37], which could be remedied by periodic recalibration. Recent progress indicates that a technique of intensity tagging [38,39] can be applied to reduce the influence of intensity fluctuations and increase the sensitivity of phase tagging. Up until now, as far as we know, the best precision of CEPM is 82 mrad for 3.5 fs laser pulses [25].…”

Section: Introductionmentioning

confidence: 99%

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Improved Carrier-Envelope Phase Determination Method for Few-Cycle Laser Pulses Using High-Order Above-Threshold Ionization

et al. 2022

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Recent studies indicate that the stereo-ATI carrier-envelope phase meter (CEPM) is an effective method to determine the carrier-envelope phase (CEP) of each and every single few-cycle laser pulse. In this method, a two-dimensional parametric asymmetry plot (PAP), which can be obtained with the measured data in two short time-of-flight intervals, is applied to extract the CEP. Thus, part of the data containing useful CEP information is discarded in the PAP method. In this work, an improved method was developed to effectively exploit most of the experimental data. By this method, we achieve a CEP precision of 57 mrad over the entire 2π range for 5.0 fs laser pulses.

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Development of a 10 kHz high harmonic source up to 140 eV photon energy for ultrafast time-, angle-, and phase-resolved photoelectron emission spectroscopy on solid targets

Schmidt

Guggenmos

Chew

et al. 2017

Review of Scientific Instruments

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We present a newly developed high harmonic beamline for time-, angle-, and carrier-envelope phase-resolved extreme ultraviolet photoemission spectroscopy on solid targets for the investigation of ultrafast band structure dynamics in the low-fs to sub-fs time regime. The source operates at a repetition rate of 10 kHz and is driven by 5 fs few-cycle near-infrared laser pulses generating high harmonic radiation with photon energies up to 120 eV at a feasible flux. The experimental end station consists of a complementary combination of photoelectron detectors which are able to spectroscopically address electron dynamics both in real and in k-space. The versatility of the source is completed by a phase-meter which allows for tracking the carrier-envelope phase for each pulse and which is synchronized to the photoelectron detectors, thus enabling phase sensitive measurements on the one hand and the selection of single attosecond pulses for ultimate time resolution in pump-probe experiments on the other hand. We demonstrate the applicability of the source by an angle- and carrier-envelope phase-resolved photoemission measurement on a tungsten (110) surface with 95 eV extreme ultraviolet radiation.

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Laser intensity effects in carrier-envelope phase-tagged time of flight-photoemission electron microscopy

Cited by 6 publications

References 54 publications

All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields

All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields

Improved Carrier-Envelope Phase Determination Method for Few-Cycle Laser Pulses Using High-Order Above-Threshold Ionization

Development of a 10 kHz high harmonic source up to 140 eV photon energy for ultrafast time-, angle-, and phase-resolved photoelectron emission spectroscopy on solid targets

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Laser intensity effects in carrier-envelope phase-tagged time of flight-photoemission electron microscopy

Cited by 6 publications

References 54 publications

All-optical spatio-temporal control of electron emission from SiO2 nanospheres with femtosecond two-color laser fields

All-optical spatio-temporal control of electron emission from SiO2 nanospheres with femtosecond two-color laser fields

Improved Carrier-Envelope Phase Determination Method for Few-Cycle Laser Pulses Using High-Order Above-Threshold Ionization

Development of a 10 kHz high harmonic source up to 140 eV photon energy for ultrafast time-, angle-, and phase-resolved photoelectron emission spectroscopy on solid targets

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All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields

All-optical spatio-temporal control of electron emission from SiO₂ nanospheres with femtosecond two-color laser fields