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Scheimpflug Lidar for combustion diagnostics

Malmqvist, Elin LU ; Brydegaard, Mikkel LU ; Aldén, Marcus LU and Bood, Joakim LU (2018) In Optics Express 26(12). p.14842-14858
Abstract

A portable Lidar system developed for large-scale (~1-20 m) combustion diagnostics is described and demonstrated. The system is able to perform remote backscattering measurements with range and temporal resolution. The range resolution is obtained by sharply imaging a part of the laser beam onto a CMOS-array or ICCD detector. The large focal depth required to do this is attained by placing the laser beam, the collection optics and the detector in a so-called Scheimpflug configuration. Results from simulations of the range capabilities and range resolution of the system are presented and its temporal resolution is also discussed. Various applications, important for combustion diagnostics, are also demonstrated, including Rayleigh... (More)

A portable Lidar system developed for large-scale (~1-20 m) combustion diagnostics is described and demonstrated. The system is able to perform remote backscattering measurements with range and temporal resolution. The range resolution is obtained by sharply imaging a part of the laser beam onto a CMOS-array or ICCD detector. The large focal depth required to do this is attained by placing the laser beam, the collection optics and the detector in a so-called Scheimpflug configuration. Results from simulations of the range capabilities and range resolution of the system are presented and its temporal resolution is also discussed. Various applications, important for combustion diagnostics, are also demonstrated, including Rayleigh scattering thermometry, aerosol detection and laser-induced fluorescence measurements. These measurements have been carried out using various continuous-wave GaN diode lasers, emitting in the violet-blue (405 – 450 nm) wavelength regime. It is anticipated that Scheimpflug Lidar will provide a useful and versatile diagnostic tool for combustion research, not only for fundamental studies, but in particular for applications at industrial sites.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
26
issue
12
pages
17 pages
publisher
Optical Society of America
external identifiers
  • scopus:85048357000
  • pmid:30114790
ISSN
1094-4087
DOI
10.1364/OE.26.014842
language
English
LU publication?
yes
id
e9719a3c-eb15-4c74-9dec-f800fddab7f7
date added to LUP
2018-06-25 16:41:19
date last changed
2020-03-24 06:16:29
@article{e9719a3c-eb15-4c74-9dec-f800fddab7f7,
  abstract     = {<p>A portable Lidar system developed for large-scale (~1-20 m) combustion diagnostics is described and demonstrated. The system is able to perform remote backscattering measurements with range and temporal resolution. The range resolution is obtained by sharply imaging a part of the laser beam onto a CMOS-array or ICCD detector. The large focal depth required to do this is attained by placing the laser beam, the collection optics and the detector in a so-called Scheimpflug configuration. Results from simulations of the range capabilities and range resolution of the system are presented and its temporal resolution is also discussed. Various applications, important for combustion diagnostics, are also demonstrated, including Rayleigh scattering thermometry, aerosol detection and laser-induced fluorescence measurements. These measurements have been carried out using various continuous-wave GaN diode lasers, emitting in the violet-blue (405 – 450 nm) wavelength regime. It is anticipated that Scheimpflug Lidar will provide a useful and versatile diagnostic tool for combustion research, not only for fundamental studies, but in particular for applications at industrial sites.</p>},
  author       = {Malmqvist, Elin and Brydegaard, Mikkel and Aldén, Marcus and Bood, Joakim},
  issn         = {1094-4087},
  language     = {eng},
  month        = {06},
  number       = {12},
  pages        = {14842--14858},
  publisher    = {Optical Society of America},
  series       = {Optics Express},
  title        = {Scheimpflug Lidar for combustion diagnostics},
  url          = {http://dx.doi.org/10.1364/OE.26.014842},
  doi          = {10.1364/OE.26.014842},
  volume       = {26},
  year         = {2018},
}