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 Observation of Ultrafast Intersystem Crossing in Thymine by Extreme Ultraviolet Time-Resolved Photoelectron Spectroscopy

2019 ◽  
Vol 123 (32) ◽  
pp. 6897-6903 ◽  
Author(s):  
Thomas J. A. Wolf ◽  
Robert M. Parrish ◽  
Rolf H. Myhre ◽  
Todd J. Martínez ◽  
Henrik Koch ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Extreme Ultraviolet ◽  
Intersystem Crossing ◽  
Time Resolved

Internal conversion and intersystem crossing dynamics of uracil upon double thionation: a time-resolved photoelectron spectroscopy study in the gas phase

2020 ◽  
Vol 22 (27) ◽  
pp. 15608-15615
Author(s):  
Abed Mohamadzade ◽  
Susanne Ullrich
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Internal Conversion ◽  
Intersystem Crossing ◽  
Spectroscopy Study ◽  
Time Resolved

Gas-phase photophysics of 2,4-dithiouracil studied by time-resolved photoelectron spectroscopy.

scholarly journals Intersystem crossing dynamics in thionated uracils studied by time-resolved photoelectron spectroscopy: The effect of substituent position

2019 ◽  
Vol 205 ◽  
pp. 09010
Author(s):  
Susanne Ullrich ◽  
Abed Mohamadzade
Keyword(s):  
Photoelectron Spectroscopy ◽  
Intersystem Crossing ◽  
Time Resolved

The photophysics of thionated uracils are investigated using time-resolved photoelectron spectroscopy with emphasis on evaluating differences in intersystem crossing dynamics with respect to substituent position.

Direct observation of slow intersystem crossing in an aromatic ketone, fluorenone

2016 ◽  
Vol 18 (33) ◽  
pp. 22914-22920 ◽  
Author(s):  
Benoît Soep ◽  
Jean-Michel Mestdagh ◽  
Marc Briant ◽  
Marc-André Gaveau ◽  
Lionel Poisson
Keyword(s):  
Gas Phase ◽  
Direct Observation ◽  
Photoelectron Spectroscopy ◽  
Aromatic Ketone ◽  
Intersystem Crossing ◽  
Time Resolved ◽  
Direct Measurements ◽  
Vibronic Level

Direct measurements of Single vibronic Level InterSystem Crossing (SLISC) performed on the fluorenone molecule in the gas phase, by time resolved photoelectron spectroscopy, revealed the dramatic importance of its structure on intersystem crossing.

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.

Sign in / Sign up

Export Citation Format

Share Document