scholarly journals Broadband cavity-enhanced ultrafast spectroscopy

2021 ◽  
Author(s):  
Myles C. Silfies ◽  
Grzegorz Kowzan ◽  
Neomi Lewis ◽  
Thomas K. Allison
Keyword(s):  
Molecular Dynamics ◽  
Optical Spectroscopy ◽  
Absorption Spectroscopy ◽  
Ultrafast Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Ultrafast Optical ◽  
Ultrafast Optical Spectroscopy

Broadband ultrafast optical spectroscopy methods, such as transient absorption spectroscopy and 2D spectroscopy, are widely used to study molecular dynamics. However, these techniques are typically restricted to optically thick samples,...

scholarly journals Widely tunable cavity-enhanced ultrafast spectroscopy

2019 ◽  
Vol 205 ◽  
pp. 01024
Author(s):  
Myles C. Silfies ◽  
Yuning Chen ◽  
Henry Timmers ◽  
Abijith S. Kowligy ◽  
Alex Lind ◽  
...  
Keyword(s):  
Gas Phase ◽  
Absorption Spectroscopy ◽  
Ultrafast Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Two Dimensional ◽  
Frequency Combs ◽  
Gas Phase Clusters ◽  
Uv Visible ◽  
Tunable Frequency

Generation of widely tunable frequency combs in the UV, visible, and infrared is discussed for use in cavity-enhanced transient absorption spectroscopy on gas-phase clusters. Progress towards cavity-enhanced two-dimensional spectroscopy is also presented.

Femtosecond Transient Absorption Spectroscopy of Single-Walled Carbon Nanotubes and their Ultrafast Optical Switching Behavior

2007 ◽  
Vol 121-123 ◽  
pp. 905-908 ◽  
Author(s):  
J.P. Yang ◽  
Manfred M. Kappes ◽  
H. Hippler ◽  
Andreas N. Unterreiner
Keyword(s):  
Absorption Spectroscopy ◽  
Optical Switching ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Switching Behavior ◽  
Ultrafast Optical ◽  
Decay Component ◽  
Femtosecond Transient Absorption ◽  
Pump And Probe ◽  
Walled Carbon Nanotubes

Two types of individualized single-walled nanotubes (SWNTs) in aqueous surfactant suspensions have been studied by femtosecond two-color absorption spectroscopy. A careful selection of pump and probe wavelengths allows for the determination of the “intrinsic” lifetimes of the lowest excited states which depend on the diameter of the SWNTs. Furthermore, a fast decay component in the ps to sub-ps regime was also observed and tentatively attributed to bundle relaxation. Likewise, this experimental approach can also assess spectral regions with decays faster than 1 ps, which is of great interest for all-optical switching devices near the optical telecommunication wavelength.

scholarly journals Ultrafast strong-field dissociation of vinyl bromide: An attosecond transient absorption spectroscopy and non-adiabatic molecular dynamics study

2021 ◽  
Vol 8 (3) ◽  
pp. 034104
Author(s):  
Florian Rott ◽  
Maurizio Reduzzi ◽  
Thomas Schnappinger ◽  
Yuki Kobayashi ◽  
Kristina F. Chang ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Strong Field ◽  
Transient Absorption Spectroscopy ◽  
Vinyl Bromide ◽  
Field Dissociation

scholarly journals All-XUV Pump-Probe Transient Absorption Spectroscopy of the Structural Molecular Dynamics of Di-iodomethane

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Marc Rebholz ◽  
Thomas Ding ◽  
Victor Despré ◽  
Lennart Aufleger ◽  
Maximilian Hartmann ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Pump Probe

scholarly journals Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

2018 ◽  
Vol 9 (4) ◽  
pp. 860-875 ◽  
Author(s):  
Dugan Hayes ◽  
Lars Kohler ◽  
Ryan G. Hadt ◽  
Xiaoyi Zhang ◽  
Cunming Liu ◽  
...  
Keyword(s):  
Excited State ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Dinuclear Complexes ◽  
X Ray ◽  
Ultrafast Optical ◽  
State Electron ◽  
Charge Hopping

Complementary ultrafast techniques provide clear observation of charge hopping between metals in dinuclear complexes.

scholarly journals Charge generation mechanism tuned via film morphology in small molecule bulk-heterojunction photovoltaic materials

2020 ◽  
Vol 8 (43) ◽  
pp. 15234-15252
Author(s):  
Sylvia J. Lou ◽  
Stephen Loser ◽  
Kyle A. Luck ◽  
Nanjia Zhou ◽  
Matthew J. Leonardi ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Small Molecule ◽  
Transient Absorption ◽  
Bulk Heterojunction ◽  
Transient Absorption Spectroscopy ◽  
Film Morphology ◽  
Charge Generation ◽  
Ultrafast Optical ◽  
Photovoltaic Materials ◽  
Optical Transient

Exciton evolution with PC61BM loading in small molecule BHJ layers revealed by GIWAXS and ultrafast optical transient absorption spectroscopy.

Disentangling the photochemistry of benzocyclobutenedione

2018 ◽  
Vol 20 (22) ◽  
pp. 15434-15444 ◽  
Author(s):  
Xiaonan Ma ◽  
Michael Wenzel ◽  
Hans-Christian Schmitt ◽  
Marco Flock ◽  
Engelbert Reusch ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Quantum Chemistry ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy

We combine transient absorption spectroscopy, quantum chemistry, and molecular dynamics to reveal multiple parallel and sequential channels of benzocyclobutenedione photochemistry.

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