Surface figure changes due to thermal cycling hysteresis

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

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


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
Issue number20
StatePublished - Oct 15 1987

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


Dive into the research topics of 'Surface figure changes due to thermal cycling hysteresis'. Together they form a unique fingerprint.

Cite this