Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments

Shivaram, Niranjan; Champenois, Elio G.; Cryan, James P.; Wright, Travis; Wingard, Taylor; Belkacem, Ali

doi:10.1063/1.4972343

Title: Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments

Journal Article · Mon Dec 19 00:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4972343· OSTI ID:1378178

^[1]; Champenois, Elio G. ^[2]; Cryan, James P. ^[3]; Wright, Travis ^[4]; Wingard, Taylor ^[2]; Belkacem, Ali ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)

We demonstrate a technique in velocity map imaging (VMI) that allows spatial gating of the laser focal overlap region in time resolved pump-probe experiments. This significantly enhances signal-to-noise ratio by eliminating background signal arising outside the region of spatial overlap of pump and probe beams. This enhancement is achieved by tilting the laser beams with respect to the surface of the VMI electrodes which creates a gradient in flight time for particles born at different points along the beam. By suitably pulsing our microchannel plate detector, we can select particles born only where the laser beams overlap. Furthermore, this spatial gating in velocity map imaging can benefit nearly all photo-ion pump-probe VMI experiments especially when extreme-ultraviolet light or X-rays are involved which produce large background signals on their own.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-05CH11231; AC02-76SF00515

OSTI ID:: 1378178

Alternate ID(s):: OSTI ID: 1336842; OSTI ID: 1360948

Journal Information:: Applied Physics Letters, Vol. 109, Issue 25; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 3 works

Citation information provided by
Web of Science

References (25)

High resolution spatial map imaging of a gaseous target Stei, Martin; von Vangerow, Johannes; Otto, Rico The Journal of Chemical Physics, Vol. 138, Issue 21 https://doi.org/10.1063/1.4807482	journal	June 2013
Two-dimensional charged particle image inversion using a polar basis function expansion Garcia, Gustavo A.; Nahon, Laurent; Powis, Ivan Review of Scientific Instruments, Vol. 75, Issue 11 https://doi.org/10.1063/1.1807578	journal	November 2004
Communication: Time- and space-sliced velocity map electron imaging Lee, Suk Kyoung; Lin, Yun Fei; Lingenfelter, Steven The Journal of Chemical Physics, Vol. 141, Issue 22 https://doi.org/10.1063/1.4903744	journal	December 2014
Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen Eppink, André T. J. B.; Parker, David H. Review of Scientific Instruments, Vol. 68, Issue 9 https://doi.org/10.1063/1.1148310	journal	September 1997
Involvement of a low-lying Rydberg state in the ultrafast relaxation dynamics of ethylene Champenois, Elio G.; Shivaram, Niranjan H.; Wright, Travis W. The Journal of Chemical Physics, Vol. 144, Issue 1 https://doi.org/10.1063/1.4939220	journal	January 2016
Coincidence ion imaging with a fast frame camera Lee, Suk Kyoung; Cudry, Fadia; Lin, Yun Fei Review of Scientific Instruments, Vol. 85, Issue 12 https://doi.org/10.1063/1.4903856	journal	December 2014
A velocity map imaging spectrometer for electron–ion and ion–ion coincidence experiments with synchrotron radiation Rolles, D.; Pešić, Z. D.; Perri, M. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 261, Issue 1-2 https://doi.org/10.1016/j.nimb.2007.04.186	journal	August 2007
Velocity map imaging of atomic and molecular processes at the free electron laser in Hamburg (FLASH) Johnsson, P.; Siu, W.; Gijsbertsen, A. Journal of Modern Optics, Vol. 55, Issue 16 https://doi.org/10.1080/09500340802393062	journal	September 2008
Photofragment image analysis using the Onion-Peeling Algorithm Manzhos, Sergei; Loock, Hans-Peter Computer Physics Communications, Vol. 154, Issue 1 https://doi.org/10.1016/S0010-4655(03)00277-7	journal	July 2003
Direct current slice imaging Townsend, Dave; Minitti, Michael P.; Suits, Arthur G. Review of Scientific Instruments, Vol. 74, Issue 4 https://doi.org/10.1063/1.1544053	journal	April 2003
In situ spatial mapping of Gouy phase slip for high-detail attosecond pump–probe measurements Shivaram, Niranjan; Roberts, Adam; Xu, Lei Optics Letters, Vol. 35, Issue 20 https://doi.org/10.1364/OL.35.003312	journal	January 2010
Plasma perspective on strong field multiphoton ionization Corkum, P. B. Physical Review Letters, Vol. 71, Issue 13 https://doi.org/10.1103/PhysRevLett.71.1994	journal	September 1993
Pump–probe photoelectron spectroscopy by a high-power 90 nm vacuum-ultraviolet laser Sato, Motoki; Suzuki, Yoshi-ichi; Suzuki, Toshinori Applied Physics Express, Vol. 9, Issue 2 https://doi.org/10.7567/APEX.9.022401	journal	January 2016
Electron localization following attosecond molecular photoionization Sansone, G.; Kelkensberg, F.; Pérez-Torres, J. F. Nature, Vol. 465, Issue 7299 https://doi.org/10.1038/nature09084	journal	June 2010
Slice imaging: A new approach to ion imaging and velocity mapping Gebhardt, Christoph R.; Rakitzis, T. Peter; Samartzis, Peter C. Review of Scientific Instruments, Vol. 72, Issue 10 https://doi.org/10.1063/1.1403010	journal	October 2001
A photoelectron velocity map imaging spectrometer for experiments combining synchrotron and laser radiations O’Keeffe, P.; Bolognesi, P.; Coreno, M. Review of Scientific Instruments, Vol. 82, Issue 3 https://doi.org/10.1063/1.3563723	journal	March 2011
Photoelectron and photofragment velocity map imaging of state-selected molecular oxygen dissociation/ionization dynamics Parker, D. H.; Eppink, A. T. J. B. The Journal of Chemical Physics, Vol. 107, Issue 7 https://doi.org/10.1063/1.474624	journal	August 1997
Megapixel ion imaging with standard video Li, Wen; Chambreau, Steven D.; Lahankar, Sridhar A. Review of Scientific Instruments, Vol. 76, Issue 6 https://doi.org/10.1063/1.1921671	journal	June 2005
High-order harmonic generation from atoms and ions in the high intensity regime Krause, Jeffrey L.; Schafer, Kenneth J.; Kulander, Kenneth C. Physical Review Letters, Vol. 68, Issue 24 https://doi.org/10.1103/PhysRevLett.68.3535	journal	June 1992
Mapping the Dissociative Ionization Dynamics of Molecular Nitrogen with Attosecond Time Resolution Trabattoni, A.; Klinker, M.; González-Vázquez, J. Physical Review X, Vol. 5, Issue 4 https://doi.org/10.1103/PhysRevX.5.041053	journal	December 2015
High-order harmonic generation using intense femtosecond pulses Macklin, J. J.; Kmetec, J. D.; Gordon, C. L. Physical Review Letters, Vol. 70, Issue 6 https://doi.org/10.1103/PhysRevLett.70.766	journal	February 1993
Reconstruction of Abel-transformable images: The Gaussian basis-set expansion Abel transform method Dribinski, Vladimir; Ossadtchi, Alexei; Mandelshtam, Vladimir A. Review of Scientific Instruments, Vol. 73, Issue 7 https://doi.org/10.1063/1.1482156	journal	July 2002
Toward real-time charged-particle image reconstruction using polar onion-peeling Roberts, G. M.; Nixon, J. L.; Lecointre, J. Review of Scientific Instruments, Vol. 80, Issue 5 https://doi.org/10.1063/1.3126527	journal	May 2009
Application of time-sliced ion velocity imaging to crossed molecular beam experiments Lin, Jim J.; Zhou, Jingang; Shiu, Weicheng Review of Scientific Instruments, Vol. 74, Issue 4 https://doi.org/10.1063/1.1561604	journal	April 2003
Optimizing surface coils and the self-shielded gradiometer Suits, B. H.; Garroway, A. N. Journal of Applied Physics, Vol. 94, Issue 6 https://doi.org/10.1063/1.1601296	journal	September 2003

Cited By (1)

Ultrafast photodissociation dynamics and nonadiabatic coupling between excited electronic states of methanol probed by time-resolved photoelectron spectroscopy Champenois, Elio G.; Greenman, Loren; Shivaram, Niranjan The Journal of Chemical Physics, Vol. 150, Issue 11 https://doi.org/10.1063/1.5079549	journal	March 2019

Similar Records

2D monochromatic x-ray imaging for beam monitoring of an x-ray free electron laser and a high-power femtosecond laser

Journal Article · Fri Jan 22 00:00:00 EST 2021 · Review of Scientific Instruments · OSTI ID:1378178

Sawada, H.; Trzaska, J.; Curry, C. B.; +16 more

Gain uniformity, linearity, saturation and depletion in gated microchannel-plate x-ray framing cameras

Conference · Wed Jul 20 00:00:00 EDT 1994 · OSTI ID:1378178

Landen, O L; Bell, P M; Satariano, J J; +2 more

Enhanced sensitivity in H photofragment detection by two-color reduced-Doppler ion imaging

Journal Article · Thu Nov 14 00:00:00 EST 2013 · Journal of Chemical Physics · OSTI ID:1378178

Epshtein, Michael; Portnov, Alexander; Kupfer, Rotem; +2 more

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Title: Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments

Citation Formats

References (25)

Cited By (1)

Similar Records

Related Subjects