Scheimpflug Lidar for combustion diagnostics

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Scheimpflug Lidar for combustion diagnostics. / Malmqvist, Elin; Brydegaard, Mikkel; Aldén, Marcus; Bood, Joakim.

In: Optics Express, Vol. 26, No. 12, 11.06.2018, p. 14842-14858.

Research output: Contribution to journalArticle

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TY - JOUR

T1 - Scheimpflug Lidar for combustion diagnostics

AU - Malmqvist, Elin

AU - Brydegaard, Mikkel

AU - Aldén, Marcus

AU - Bood, Joakim

PY - 2018/6/11

Y1 - 2018/6/11

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85048357000&partnerID=8YFLogxK

U2 - 10.1364/OE.26.014842

DO - 10.1364/OE.26.014842

M3 - Article

VL - 26

SP - 14842

EP - 14858

JO - Optics Express

T2 - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 12

ER -