Surface figure changes due to thermal cycling hysteresis

S. F. Jacobs, S. C. Johnston, Jose M Sasian, M. Watson, J. D. Targove, D. Bass

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

How does thermal cycling hysteresis affect surface figure in low expansivity mirror substrates? Zerodur, ULE, and Cer-Vit 20.3-cm (8-in.) diam mirrors and dilatometer samples were thermally cycled at 6 and 60 K/h with uniform and nonuniform heating. Figure distortions as large as X/10 were observed only with nonuniform heating of standard Zerodur, which was the only material exhibiting thermal hysteresis. A new experimental Zerodur appears to be free of this problem.

Original languageEnglish (US)
Pages (from-to)4438-4442
Number of pages5
JournalApplied Optics
Volume26
Issue number20
DOIs
StatePublished - Oct 15 1987

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Jacobs, S. F., Johnston, S. C., Sasian, J. M., Watson, M., Targove, J. D., & Bass, D. (1987). Surface figure changes due to thermal cycling hysteresis. Applied Optics, 26(20), 4438-4442. https://doi.org/10.1364/AO.26.004438