Changes in surface figure due to thermal hysteresis

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

Research output: Contribution to journalArticle

Abstract

Thermal cycling hysteresis affects surface figure in low-expansivity mirror substrates. Zerodur, ULE, and Cer-Vit 8-in.-diameter mirrors and dilatometer samples were thermally cycled at uniform rates of 6 K/hr and 60 K/hr, and somewhat faster for nonuniform heating. Figure distortions as large as Λ/10 were observed following 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)193-203
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume817
DOIs
StatePublished - Jan 1 1987

Fingerprint

Hysteresis
Heating
Mirror
Figure
hysteresis
mirrors
extensometers
Dilatometers
heating
Cycling
Thermal cycling
Mirrors
Substrate
cycles
Substrates
Hot Temperature
Standards

ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Cite this

Changes in surface figure due to thermal hysteresis. / Jacobs, S. F.; Johnston, S. C.; Sasian, Jose M; Watson, M.; Targove, J. D.; Bass, D.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 817, 01.01.1987, p. 193-203.

Research output: Contribution to journalArticle

Jacobs, S. F. ; Johnston, S. C. ; Sasian, Jose M ; Watson, M. ; Targove, J. D. ; Bass, D. / Changes in surface figure due to thermal hysteresis. In: Proceedings of SPIE - The International Society for Optical Engineering. 1987 ; Vol. 817. pp. 193-203.
@article{d58675a441fb42dcbfaae29de26778db,
title = "Changes in surface figure due to thermal hysteresis",
abstract = "Thermal cycling hysteresis affects surface figure in low-expansivity mirror substrates. Zerodur, ULE, and Cer-Vit 8-in.-diameter mirrors and dilatometer samples were thermally cycled at uniform rates of 6 K/hr and 60 K/hr, and somewhat faster for nonuniform heating. Figure distortions as large as Λ/10 were observed following nonuniform heating of standard Zerodur, which was the only material exhibiting thermal hysteresis. A new experimental Zerodur appears to be free of this problem.",
author = "Jacobs, {S. F.} and Johnston, {S. C.} and Sasian, {Jose M} and M. Watson and Targove, {J. D.} and D. Bass",
year = "1987",
month = "1",
day = "1",
doi = "10.1117/12.967424",
language = "English (US)",
volume = "817",
pages = "193--203",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",

}

TY - JOUR

T1 - Changes in surface figure due to thermal hysteresis

AU - Jacobs, S. F.

AU - Johnston, S. C.

AU - Sasian, Jose M

AU - Watson, M.

AU - Targove, J. D.

AU - Bass, D.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - Thermal cycling hysteresis affects surface figure in low-expansivity mirror substrates. Zerodur, ULE, and Cer-Vit 8-in.-diameter mirrors and dilatometer samples were thermally cycled at uniform rates of 6 K/hr and 60 K/hr, and somewhat faster for nonuniform heating. Figure distortions as large as Λ/10 were observed following nonuniform heating of standard Zerodur, which was the only material exhibiting thermal hysteresis. A new experimental Zerodur appears to be free of this problem.

AB - Thermal cycling hysteresis affects surface figure in low-expansivity mirror substrates. Zerodur, ULE, and Cer-Vit 8-in.-diameter mirrors and dilatometer samples were thermally cycled at uniform rates of 6 K/hr and 60 K/hr, and somewhat faster for nonuniform heating. Figure distortions as large as Λ/10 were observed following nonuniform heating of standard Zerodur, which was the only material exhibiting thermal hysteresis. A new experimental Zerodur appears to be free of this problem.

UR - http://www.scopus.com/inward/record.url?scp=84957473184&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84957473184&partnerID=8YFLogxK

U2 - 10.1117/12.967424

DO - 10.1117/12.967424

M3 - Article

VL - 817

SP - 193

EP - 203

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

ER -