54 citations · 199 across the 17 of their papers we have counts for
17 papers
Highly efficient DUV generation at 100 kHz via Yb pumped four-wave mixing in stretched hollow-core fibers
Ruaridh Forbes, Paul Hockett, Rune Lausten
We report the generation of the fifth harmonic of Yb at 206 nm with pulse energies exceeding 16 J and durations of approximately 100 fs at a repetition rate of 100 kHz. The deep…
Efficient (10) Generation of Vacuum Ultraviolet Femtosecond Pulses via Four-Wave Mixing in Hollow-Core Fibers
Ruaridh Forbes, Paul Hockett, Quentin Leterrier +1
We report the generation of the 5th harmonic of Ti:sapphire, at 160 nm, with more than 4~J of pulse energy, and a pulse length of 37 fs with a 1 kHz repetition rate. The VUV pul…
Experimental Demonstration of Attosecond Pump-Probe Spectroscopy with an X-ray Free-Electron Laser
Zhaoheng Guo, Taran Driver, Sandra Beauvarlet +47
Pump-probe experiments with sub-femtosecond resolution are the key to understanding electronic dynamics in quantum systems. Here we demonstrate the generation and control of sub-fe…
High Repetition-Rate Pulse Shaping of a Spectrally Broadened Yb Femtosecond Laser
Julia Codere, Michael Belmonte, Brian Kaufman +5
We demonstrate compression and shaping of few cycle pulses from a high average power Ytterbium laser system. The pulses from a commercial 20 W, 100 kHz Yb laser system are spectral…
Femtosecond electronic and hydrogen structural dynamics in ammonia imaged with ultrafast electron diffraction
Elio G. Champenois, Nanna H. List, Matthew Ware +18
Directly imaging structural dynamics involving hydrogen atoms by ultrafast diffraction methods is complicated by their low scattering cross-sections. Here we demonstrate that megae…
Ultrafast Molecular Frame Quantum Tomography
Luna Morrigan, Simon P. Neville, Margaret Gregory +8
We develop and experimentally demonstrate a methodology for a full molecular frame quantum tomography (MFQT) of dynamical polyatomic systems. We exemplify this approach through the…
Filming Enhanced Ionization in an Ultrafast Triatomic Slingshot
A. J. Howard, M. Britton, Z. L. Streeter +10
Filming atomic motion within molecules is an active pursuit of molecular physics and quantum chemistry. A promising method is laser-induced Coulomb Explosion Imaging (CEI) where a…
Photon Energy-Resolved Velocity Map Imaging from Spectral Domain Ghost Imaging
Jun Wang, Taran C. Driver, Felix Allum +11
We present an approach that combines photon spectrum correlation analysis with the reconstruction of three-dimensional momentum distribution from velocity map images in an efficien…
Time Correlation Filtering Reveals Two-Path Electron Quantum Interference in Strong-Field Ionization
Nicholas Werby, Andrew S. Maxwell, Ruaridh Forbes +2
Attosecond dynamics in strong-field tunnel ionization are encoded in intricate holographic patterns in the photoelectron momentum distributions (PMDs). These patterns show the inte…
Conformer-specific Chemistry Imaged in Real Space and Time
E. G. Champenois, D. M. Sanchez, J. Yang +17
Conformational isomers or conformers of molecules play a decisive role in chemistry and biology. However, experimental methods to investigate chemical reaction dynamics are typical…
Strong Field Ionization of Water II: Electronic and Nuclear Dynamics En Route to Double Ionization
Chuan Cheng, Zachary L. Streeter, Andrew J. Howard +6
We investigate the role of nuclear motion and strong-field-induced electronic couplings during the double ionization of deuterated water using momentum-resolved coincidence spectro…
Dissecting Sub-Cycle Interference in Photoelectron Holography
Nicholas Werby, Andrew S. Maxwell, Ruaridh Forbes +2
Multipath holographic interference in strong-field quantum tunnel ionization is key to revealing sub-Angstrom attosecond dynamics for molecular movies. This critical sub-cycle moti…
Strong Field Ionization of Water: Nuclear Dynamics Revealed by Varying the Pulse Duration
A. J. Howard, C. Cheng, R. Forbes +6
Polyatomic molecules in strong laser fields can undergo substantial nuclear motion within tens of femtoseconds. Ion imaging methods based on dissociation or Coulomb explosion there…
Disentangling the Sub-Cycle Electron Momentum Spectrum in Strong-Field Ionization
Nicholas Werby, Adi Natan, Ruaridh Forbes +1
Quantum calculations of tunneling in strong-field ionization (SFI) predict intricate momentum distributions due to sub-laser-cycle attosecond electron dynamics. These are obscured…
Tracking the Ultraviolet Photochemistry of Thiophenone During and Beyond the Initial Ultrafast Ring Opening
Shashank Pathak, Lea M. Ibele, Rebecca Boll +19
Photoinduced isomerization reactions, including ring-opening reactions, lie at the heart of many processes in nature. The mechanisms of such reactions are determined by a delicate…
Quantum Beat Photoelectron Imaging Spectroscopy of Xe in the VUV
Ruaridh Forbes, Varun Makhija, Jonathan Underwood +4
Time-resolved pump-probe measurements of Xe, pumped at 133~nm and probed at 266~nm, are presented. The pump pulse prepared a long-lived hyperfine wavepacket, in the Xe $5p^5(^2P^{\…
Time-resolved multi-mass ion imaging: femtosecond UV-VUV pump-probe spectroscopy with the PImMS camera
Ruaridh Forbes, Varun Makhija, Kévin Veyrinas +8
The Pixel-Imaging Mass Spectrometry (PImMS) camera allows for 3D charged particle imaging measurements, in which the particle time-of-flight is recorded along with position…