High-repetition-rate combustion thermometry with two-line atomic fluorescence excited by diode lasers

Robin S. M. Chrystie, Iain S. Burns, Johan Hult, and Clemens F. Kaminski

Your library or personal account may give you access

• Abstract
• Full Article

• Figures (3)
• References (11)
• Cited By(22)
• Metrics
• Back to Top

Abstract

We report on kilohertz-repetition-rate flame temperature measurements performed using blue diode lasers. Two-line atomic fluorescence was performed by using diode lasers emitting at around 410 and 451 nm to probe seeded atomic indium. At a repetition rate of 3.5 kHz our technique offers a precision of 1.5% at 2000 K in laminar methane/air flames. The spatial resolution is better than$150\mu \text{m}$, while the setup is compact and easy to operate, at much lower cost than alternative techniques. By modeling the spectral overlap between the locked laser and the probed indium lines we avoid the need for any calibration of the measurements. We demonstrate the capability of the technique for time-resolved measurements in an acoustically perturbed flame. The technique is applicable in flames with a wide range of compositions including sooting flames.

© 2009 Optical Society of America

Lidar thermometry using two-line atomic fluorescence

E. Malmqvist, J. Borggren, M. Aldén, and J. Bood
Appl. Opt.58(4) 1128-1133 (2019)

Calibration-free imaging thermometry via two-line atomic fluorescence in combustion processes

Markus Labus, Peter Lang, Franz J. T. Huber, and Stefan Will
Opt. Lett.47(22) 5937-5940 (2022)

Spatially resolved temperature measurements in a flame using laser-excited two-line atomic fluorescence and diode-array detection

M. Aldén, P. Grafstrom, H. Lundberg, and S. Svanberg
Opt. Lett.8(5) 241-243 (1983)

Two-line atomic fluorescence as a temperature probe for highly sooting flames

J. Engström, J. Nygren, M. Aldén, and C. F. Kaminski
Opt. Lett.25(19) 1469-1471 (2000)

Development of temperature imaging using two-line atomic fluorescence

Paul R. Medwell, Qing N. Chan, Peter A. M. Kalt, Zeyad T. Alwahabi, Bassam B. Dally, and Graham J. Nathan
Appl. Opt.48(6) 1237-1248 (2009)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription