Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments
Abstract
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.
- Authors:
-
[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)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1378178
- Alternate Identifier(s):
- OSTI ID: 1336842; OSTI ID: 1360948
- Grant/Contract Number:
- AC02-05CH11231; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 109; Journal Issue: 25; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Shivaram, Niranjan, Champenois, Elio G., Cryan, James P., Wright, Travis, Wingard, Taylor, and Belkacem, Ali. Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments. United States: N. p., 2016.
Web. doi:10.1063/1.4972343.
Shivaram, Niranjan, Champenois, Elio G., Cryan, James P., Wright, Travis, Wingard, Taylor, & Belkacem, Ali. Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments. United States. https://doi.org/10.1063/1.4972343
Shivaram, Niranjan, Champenois, Elio G., Cryan, James P., Wright, Travis, Wingard, Taylor, and Belkacem, Ali. Mon .
"Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments". United States. https://doi.org/10.1063/1.4972343. https://www.osti.gov/servlets/purl/1378178.
@article{osti_1378178,
title = {Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments},
author = {Shivaram, Niranjan and Champenois, Elio G. and Cryan, James P. and Wright, Travis and Wingard, Taylor and Belkacem, Ali},
abstractNote = {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.},
doi = {10.1063/1.4972343},
journal = {Applied Physics Letters},
number = 25,
volume = 109,
place = {United States},
year = {Mon Dec 19 00:00:00 EST 2016},
month = {Mon Dec 19 00:00:00 EST 2016}
}
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Works referenced in this record:
High resolution spatial map imaging of a gaseous target
journal, June 2013
- Stei, Martin; von Vangerow, Johannes; Otto, Rico
- The Journal of Chemical Physics, Vol. 138, Issue 21
Two-dimensional charged particle image inversion using a polar basis function expansion
journal, November 2004
- Garcia, Gustavo A.; Nahon, Laurent; Powis, Ivan
- Review of Scientific Instruments, Vol. 75, Issue 11
Communication: Time- and space-sliced velocity map electron imaging
journal, December 2014
- Lee, Suk Kyoung; Lin, Yun Fei; Lingenfelter, Steven
- The Journal of Chemical Physics, Vol. 141, Issue 22
Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen
journal, September 1997
- Eppink, André T. J. B.; Parker, David H.
- Review of Scientific Instruments, Vol. 68, Issue 9
Involvement of a low-lying Rydberg state in the ultrafast relaxation dynamics of ethylene
journal, January 2016
- Champenois, Elio G.; Shivaram, Niranjan H.; Wright, Travis W.
- The Journal of Chemical Physics, Vol. 144, Issue 1
Coincidence ion imaging with a fast frame camera
journal, December 2014
- Lee, Suk Kyoung; Cudry, Fadia; Lin, Yun Fei
- Review of Scientific Instruments, Vol. 85, Issue 12
A velocity map imaging spectrometer for electron–ion and ion–ion coincidence experiments with synchrotron radiation
journal, August 2007
- 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
Velocity map imaging of atomic and molecular processes at the free electron laser in Hamburg (FLASH)
journal, September 2008
- Johnsson, P.; Siu, W.; Gijsbertsen, A.
- Journal of Modern Optics, Vol. 55, Issue 16
Photofragment image analysis using the Onion-Peeling Algorithm
journal, July 2003
- Manzhos, Sergei; Loock, Hans-Peter
- Computer Physics Communications, Vol. 154, Issue 1
Direct current slice imaging
journal, April 2003
- Townsend, Dave; Minitti, Michael P.; Suits, Arthur G.
- Review of Scientific Instruments, Vol. 74, Issue 4
In situ spatial mapping of Gouy phase slip for high-detail attosecond pump–probe measurements
journal, January 2010
- Shivaram, Niranjan; Roberts, Adam; Xu, Lei
- Optics Letters, Vol. 35, Issue 20
Plasma perspective on strong field multiphoton ionization
journal, September 1993
- Corkum, P. B.
- Physical Review Letters, Vol. 71, Issue 13
Pump–probe photoelectron spectroscopy by a high-power 90 nm vacuum-ultraviolet laser
journal, January 2016
- Sato, Motoki; Suzuki, Yoshi-ichi; Suzuki, Toshinori
- Applied Physics Express, Vol. 9, Issue 2
Electron localization following attosecond molecular photoionization
journal, June 2010
- Sansone, G.; Kelkensberg, F.; Pérez-Torres, J. F.
- Nature, Vol. 465, Issue 7299
Slice imaging: A new approach to ion imaging and velocity mapping
journal, October 2001
- Gebhardt, Christoph R.; Rakitzis, T. Peter; Samartzis, Peter C.
- Review of Scientific Instruments, Vol. 72, Issue 10
A photoelectron velocity map imaging spectrometer for experiments combining synchrotron and laser radiations
journal, March 2011
- O’Keeffe, P.; Bolognesi, P.; Coreno, M.
- Review of Scientific Instruments, Vol. 82, Issue 3
Photoelectron and photofragment velocity map imaging of state-selected molecular oxygen dissociation/ionization dynamics
journal, August 1997
- Parker, D. H.; Eppink, A. T. J. B.
- The Journal of Chemical Physics, Vol. 107, Issue 7
Megapixel ion imaging with standard video
journal, June 2005
- Li, Wen; Chambreau, Steven D.; Lahankar, Sridhar A.
- Review of Scientific Instruments, Vol. 76, Issue 6
High-order harmonic generation from atoms and ions in the high intensity regime
journal, June 1992
- Krause, Jeffrey L.; Schafer, Kenneth J.; Kulander, Kenneth C.
- Physical Review Letters, Vol. 68, Issue 24
Mapping the Dissociative Ionization Dynamics of Molecular Nitrogen with Attosecond Time Resolution
journal, December 2015
- Trabattoni, A.; Klinker, M.; González-Vázquez, J.
- Physical Review X, Vol. 5, Issue 4
High-order harmonic generation using intense femtosecond pulses
journal, February 1993
- Macklin, J. J.; Kmetec, J. D.; Gordon, C. L.
- Physical Review Letters, Vol. 70, Issue 6
Reconstruction of Abel-transformable images: The Gaussian basis-set expansion Abel transform method
journal, July 2002
- Dribinski, Vladimir; Ossadtchi, Alexei; Mandelshtam, Vladimir A.
- Review of Scientific Instruments, Vol. 73, Issue 7
Toward real-time charged-particle image reconstruction using polar onion-peeling
journal, May 2009
- Roberts, G. M.; Nixon, J. L.; Lecointre, J.
- Review of Scientific Instruments, Vol. 80, Issue 5
Application of time-sliced ion velocity imaging to crossed molecular beam experiments
journal, April 2003
- Lin, Jim J.; Zhou, Jingang; Shiu, Weicheng
- Review of Scientific Instruments, Vol. 74, Issue 4
Optimizing surface coils and the self-shielded gradiometer
journal, September 2003
- Suits, B. H.; Garroway, A. N.
- Journal of Applied Physics, Vol. 94, Issue 6
Works referencing / citing this record:
Ultrafast photodissociation dynamics and nonadiabatic coupling between excited electronic states of methanol probed by time-resolved photoelectron spectroscopy
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- Champenois, Elio G.; Greenman, Loren; Shivaram, Niranjan
- The Journal of Chemical Physics, Vol. 150, Issue 11