Utility and constraint on the use of pump-probe photoelectron spectroscopy for detecting time-resolved surface photovoltage

2012 ◽  
Vol 185 (5-7) ◽  
pp. 152-158 ◽  
Author(s):  
Shin-ichiro Tanaka
Keyword(s):  
Photoelectron Spectroscopy ◽  
Surface Photovoltage ◽  
Time Resolved ◽  
Pump Probe

Ultrafast Intersystem Crossing in Isolated Ag29(BDT)123– Probed by Time-Resolved Pump–Probe Photoelectron Spectroscopy

2020 ◽  
Vol 11 (7) ◽  
pp. 2675-2681 ◽  
Author(s):  
Aron P. Veenstra ◽  
Laurenz Monzel ◽  
Ananya Baksi ◽  
Joseph Czekner ◽  
Sergei Lebedkin ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Intersystem Crossing ◽  
Time Resolved ◽  
Pump Probe

scholarly journals Pump−probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL

2017 ◽  
Vol 24 (4) ◽  
pp. 886-897 ◽  
Author(s):  
Mathieu G. Silly ◽  
Tom Ferté ◽  
Marie Agnes Tordeux ◽  
Debora Pierucci ◽  
Nathan Beaulieu ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Time Resolution ◽  
Photoelectron Spectroscopy ◽  
Dimensional Space ◽  
Operation Mode ◽  
Magnetic Scattering ◽  
High Time Resolution ◽  
X Rays ◽  
Time Resolved ◽  
Pump Probe

The SOLEIL synchrotron radiation source is regularly operated in special filling modes dedicated to pump–probe experiments. Among others, the low-α mode operation is characterized by shorter pulse duration and represents the natural bridge between 50 ps synchrotron pulses and femtosecond experiments. Here, the capabilities in low-α mode of the experimental set-ups developed at the TEMPO beamline to perform pump–probe experiments with soft X-rays based on photoelectron or photon detection are presented. A 282 kHz repetition-rate femtosecond laser is synchronized with the synchrotron radiation time structure to induce fast electronic and/or magnetic excitations. Detection is performed using a two-dimensional space resolution plus time resolution detector based on microchannel plates equipped with a delay line. Results of time-resolved photoelectron spectroscopy, circular dichroism and magnetic scattering experiments are reported, and their respective advantages and limitations in the framework of high-time-resolution pump–probe experiments compared and discussed.

Pump-Probe Measurements Using Silicon Nanocrystal Waveguides

2003 ◽  
Vol 770 ◽  
Author(s):  
Nathanael Smith ◽  
Max J. Lederer ◽  
Marek Samoc ◽  
Barry Luther-Davies ◽  
Robert G. Elliman
Keyword(s):  
Probe Beam ◽  
Time Resolution ◽  
Pump Beam ◽  
Silicon Nanocrystals ◽  
Continuous Wave ◽  
Optical Gain ◽  
Optical Pump ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Measurements

AbstractOptical pump-probe measurements were performed on planar slab waveguides containing silicon nanocrystals in an attempt to measure optical gain from photo-excited silicon nanocrystals. Two experiments were performed, one with a continuous-wave probe beam and a pulsed pump beam, giving a time resolution of approximately 25 ns, and the other with a pulsed pump and probe beam, giving a time resolution of approximately 10 ps. In both cases the intensity of the probe beam was found to be attenuated by the pump beam, with the attenuation increasing monotonically with increasing pump power. Time-resolved measurements using the first experimental arrangement showed that the probe signal recovered its initial intensity on a time scale of 45-70 μs, a value comparable to the exciton lifetime in Si nanocrystals. These data are shown to be consistent with an induced absorption process such as confined carrier absorption. No evidence for optical gain was observed.

scholarly journals Attosecond intra-valence band dynamics and resonant-photoemission delays in W(110)

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
S. Heinrich ◽  
T. Saule ◽  
M. Högner ◽  
Y. Cui ◽  
V. S. Yakovlev ◽  
...  
Keyword(s):  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Electronic Band Structure ◽  
Photoelectric Effect ◽  
Final State ◽  
Electronic Band ◽  
Time Resolved ◽  
Resonant Photoemission ◽  
Pulse Trains ◽  
Electron Correlation Effects

AbstractTime-resolved photoelectron spectroscopy with attosecond precision provides new insights into the photoelectric effect and gives information about the timing of photoemission from different electronic states within the electronic band structure of solids. Electron transport, scattering phenomena and electron-electron correlation effects can be observed on attosecond time scales by timing photoemission from valence band states against that from core states. However, accessing intraband effects was so far particularly challenging due to the simultaneous requirements on energy, momentum and time resolution. Here we report on an experiment utilizing intracavity generated attosecond pulse trains to meet these demands at high flux and high photon energies to measure intraband delays between sp- and d-band states in the valence band photoemission from tungsten and investigate final-state effects in resonant photoemission.

Investigation on nonlinear dynamics of ZnO using time-resolved pump-probe technique with phase object

2011 ◽  
Author(s):  
Lirong Ge ◽  
Min Shui ◽  
Xiao Jin ◽  
Zhongguo Li ◽  
Yinglin Song
Keyword(s):  
Nonlinear Dynamics ◽  
Phase Object ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Technique

Time-Resolved Femtosecond Photoelectron Spectroscopy by Field-Induced Surface Hopping

2011 ◽  
Vol 115 (16) ◽  
pp. 3755-3765 ◽  
Author(s):  
Roland Mitrić ◽  
Jens Petersen ◽  
Matthias Wohlgemuth ◽  
Ute Werner ◽  
Vlasta Bonačić-Koutecký ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Time Resolved ◽  
Surface Hopping
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