LED excited phosphor thermometry in excess of 1000°C

S. M. Goedeke, S. W. Allison, M. R. Cates, P. R. Boudreaux, R. E. Valiga, D. Mee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In most high temperature phosphor thermography applications, a laser light source is used. The high power density of the excitation light helps to overcome some of the limitations of the phosphor emission and blackbody background. The increase in availability and intensity of ultraviolet (UV) and blue LEDs has allowed for expansion of the phosphor thermometry technique. LEDs have some advantages over lasers. - LEDs are less expensive to purchase and operate. - Because the power density of the LED is less than a laser, fewer safety precautions are required. For this effort, several yttrium aluminum garnet and yttrium oxide based phosphors were evaluated. As a proof of principle, decay times were measured for temperatures up to and in excess of 1000 °C.

Original languageEnglish
Title of host publicationISA - The Instrumentation, Systems, and Automation Society - 53rd International Instrumentation Symposium 2007
Pages443-463
Number of pages21
StatePublished - 2007
Event53rd International Instrumentation Symposium 2007 - Tulsa, OK, United States
Duration: Apr 30 2007May 3 2007

Publication series

NameProceedings of the International Instrumentation Symposium
Volume470
ISSN (Print)1558-8041

Conference

Conference53rd International Instrumentation Symposium 2007
Country/TerritoryUnited States
CityTulsa, OK
Period04/30/0705/3/07

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