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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 17 — Jun. 10, 2004
  • pp: 3523–3529

Temperature Measurements of Single Droplets by Use of Laser-Induced Phosphorescence

Alaa Omrane, Greger Juhlin, Frederik Ossler, and Marcus Aldén  »View Author Affiliations


Applied Optics, Vol. 43, Issue 17, pp. 3523-3529 (2004)
http://dx.doi.org/10.1364/AO.43.003523


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Abstract

A novel technique for measuring droplet temperatures has been demonstrated. Laser-induced phosphorescence from thermographic phosphors, seeded to distilled water and iso-octane, was used to measure temperatures of single falling droplets. The phosphors were excited by the fourth and third harmonics of a Nd:YAG laser. The subsequent emission was evaluated by spectral and temporal investigations of the thermographic phosphors Mg<sub>4</sub>FGeO<sub>6</sub>:Mn and La<sub>2</sub>O<sub>2</sub>S:Eu, respectively. The spectral and the temporal methods permitted temperature measurements of free-falling droplets up to 433 K. Results from both methods, which show an estimated accuracy of better than 1%, are presented.

© 2004 Optical Society of America

OCIS Codes
(120.6780) Instrumentation, measurement, and metrology : Temperature
(160.2540) Materials : Fluorescent and luminescent materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

Citation
Alaa Omrane, Greger Juhlin, Frederik Ossler, and Marcus Aldén, "Temperature Measurements of Single Droplets by Use of Laser-Induced Phosphorescence," Appl. Opt. 43, 3523-3529 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-17-3523

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