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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 16 — Aug. 15, 1984
  • pp: 2734–2737

Simple technique for obtaining approximate thermal expansion coefficients of low expansion materials: applications to Zerodur

Harold E. Bennett, J. J. Shaffer, and D. K. Burge  »View Author Affiliations


Applied Optics, Vol. 23, Issue 16, pp. 2734-2737 (1984)
http://dx.doi.org/10.1364/AO.23.002734


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Abstract

A simple interferometric test setup for measuring thermal expansion coefficients as low as 1 × 10−8/°C is described. The sample to be tested is polished optically flat, interference fringes are formed between the front surface of the sample and a reference surface, and their movement, as boiling water is applied to the back side of the test piece, is observed. When this process was applied to Zerodur, approximate agreement with expected values was achieved. A small permanent change in the Zerodur optical figure occurred as a result of this test procedure, suggesting that Zerodur should not be exposed to strong thermal shock during use.

© 1984 Optical Society of America

History
Original Manuscript: April 2, 1984
Published: August 15, 1984

Citation
Harold E. Bennett, J. J. Shaffer, and D. K. Burge, "Simple technique for obtaining approximate thermal expansion coefficients of low expansion materials: applications to Zerodur," Appl. Opt. 23, 2734-2737 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-16-2734

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