Stress measurements in glass by use of double thermal gratings

Bret D. Cannon, Chester Shepard, Mohammad Khaleel

Research output: Contribution to journalArticle

3 Citations (Scopus)


We developed a nondestructive and noncontact method for measuring stress at the midplane of tempered glass plates that uses Bragg scattering from a pair of thermal gratings. These gratings are formed by 1064-nm beams from a seeded Nd:YAG laser, and we measure the polarization state of light from a 532-nm beam that scatters from both thermal gratings. The change in polarization of the doubly scattered light with separation between the two gratings allows measurement of the in-plane stress. A model of the Bragg scattering efficiency, experimental investigations of the scattered beams, and stress measurements are reported.

Original languageEnglish
Pages (from-to)5354-5369
Number of pages16
JournalApplied Optics
Issue number30
Publication statusPublished - 20 Oct 2001
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Cannon, B. D., Shepard, C., & Khaleel, M. (2001). Stress measurements in glass by use of double thermal gratings. Applied Optics, 40(30), 5354-5369.