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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1095–1097

Lifetime-based measurement of stress using mechanoluminescence of SrAl2O4:Eu2+

Satoshi Someya, Keiko Ishii, Masayuki Saeki, and Tetsuo Munakata  »View Author Affiliations

Optics Letters, Vol. 38, Issue 7, pp. 1095-1097 (2013)

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The stress and loading rate on disks of SrAl2O4:Eu mixed epoxy resin were measured by a lifetime-based method. The concentration of the mechanoluminescence (ML) phosphor and the excitation power did not affect the measured lifetime. The lifetime was proportional to the stress and was inversely proportional to the loading rate. The concentration, the excitation power, the stress, and the loading rate affected the peak intensity of ML, while previous work estimated the stress using the absolute intensity under well-controlled excitation and concentration conditions. The method used here can shorten the measurement time and enhance the practicality of a ML phosphor.

© 2013 Optical Society of America

OCIS Codes
(170.3650) Medical optics and biotechnology : Lifetime-based sensing
(260.3800) Physical optics : Luminescence
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(310.4925) Thin films : Other properties (stress, chemical, etc.)

ToC Category:
Remote Sensing and Sensors

Original Manuscript: January 21, 2013
Revised Manuscript: February 27, 2013
Manuscript Accepted: February 28, 2013
Published: March 22, 2013

Satoshi Someya, Keiko Ishii, Masayuki Saeki, and Tetsuo Munakata, "Lifetime-based measurement of stress using mechanoluminescence of SrAl2O4:Eu2+," Opt. Lett. 38, 1095-1097 (2013)

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