Changes In Surface Figure Due To Thermal Hysteresis

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

doi:10.1117/12.967424

1 January 1987 Changes In Surface Figure Due To Thermal Hysteresis

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

Proceedings Volume 0817, Optomechanical Systems Engineering; (1987) https://doi.org/10.1117/12.967424
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

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.

Citation Download Citation

S. F. Jacobs, S. C. Johnston, J. M. Sasian, M. Watson, J. D. Targove, and D. Bass "Changes In Surface Figure Due To Thermal Hysteresis", Proc. SPIE 0817, Optomechanical Systems Engineering, (1 January 1987); https://doi.org/10.1117/12.967424

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available