Evaluation of optical arrangements for ballistic imaging in sprays
(2015) In Optics Express 23(17). p.22444-22462- Abstract
- This work investigates the imaging performance, in terms of contrast and resolution, of two different time-gated ballistic imaging setups commonly used in spray research. It is shown that the two setups generate similar spatial resolution in the presence of scattering media. The simpler (2f) setup, however, is less sensitive to component misalignments and time-gate induced aberrations than the commonly used (4f) system. Measurements comparing both arrangements indicated slightly higher contrast for the 2f system under the densest conditions for small scatterers. Subsequent computational modeling confirmed the observed tolerance of the 2f system to misalignment and gate effects. The best performing setup was also compared experimentally to... (More)
- This work investigates the imaging performance, in terms of contrast and resolution, of two different time-gated ballistic imaging setups commonly used in spray research. It is shown that the two setups generate similar spatial resolution in the presence of scattering media. The simpler (2f) setup, however, is less sensitive to component misalignments and time-gate induced aberrations than the commonly used (4f) system. Measurements comparing both arrangements indicated slightly higher contrast for the 2f system under the densest conditions for small scatterers. Subsequent computational modeling confirmed the observed tolerance of the 2f system to misalignment and gate effects. The best performing setup was also compared experimentally to its non-time-gated shadow-imaging equivalent, to establish when the time-gate enhances imaging performance. It is shown that the time-gated setup generates higher contrast under almost all of the scattering conditions tested, while the non-time-gated setup generates higher spatial resolution only in the lower scatterer size range at the lowest scatterer concentrations. (C) 2015 Optical Society of America (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8220493
- author
- Rahm, Mattias ; Paciaroni, Megan ; Wang, Zhenkan LU ; Sedarsky, David and Linne, Mark
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 23
- issue
- 17
- pages
- 22444 - 22462
- publisher
- Optical Society of America
- external identifiers
-
- wos:000362418300080
- scopus:84957548334
- ISSN
- 1094-4087
- DOI
- 10.1364/OE.23.022444
- language
- English
- LU publication?
- yes
- id
- 0a4cbc22-8551-470c-8be4-c96967f6aae8 (old id 8220493)
- date added to LUP
- 2016-04-01 13:44:47
- date last changed
- 2022-01-27 20:48:30
@article{0a4cbc22-8551-470c-8be4-c96967f6aae8,
abstract = {{This work investigates the imaging performance, in terms of contrast and resolution, of two different time-gated ballistic imaging setups commonly used in spray research. It is shown that the two setups generate similar spatial resolution in the presence of scattering media. The simpler (2f) setup, however, is less sensitive to component misalignments and time-gate induced aberrations than the commonly used (4f) system. Measurements comparing both arrangements indicated slightly higher contrast for the 2f system under the densest conditions for small scatterers. Subsequent computational modeling confirmed the observed tolerance of the 2f system to misalignment and gate effects. The best performing setup was also compared experimentally to its non-time-gated shadow-imaging equivalent, to establish when the time-gate enhances imaging performance. It is shown that the time-gated setup generates higher contrast under almost all of the scattering conditions tested, while the non-time-gated setup generates higher spatial resolution only in the lower scatterer size range at the lowest scatterer concentrations. (C) 2015 Optical Society of America}},
author = {{Rahm, Mattias and Paciaroni, Megan and Wang, Zhenkan and Sedarsky, David and Linne, Mark}},
issn = {{1094-4087}},
language = {{eng}},
number = {{17}},
pages = {{22444--22462}},
publisher = {{Optical Society of America}},
series = {{Optics Express}},
title = {{Evaluation of optical arrangements for ballistic imaging in sprays}},
url = {{http://dx.doi.org/10.1364/OE.23.022444}},
doi = {{10.1364/OE.23.022444}},
volume = {{23}},
year = {{2015}},
}