Thermal Expansion of Borosilicate Glass, Zerodur, Zerodur M, and Uncer amized Zerodur at Low Temperatures

Abstract

Current plans for space exploration are calling for more information about materials—at ever lower temperatures. The University of Arizona is making a 2-m prototype mirror for the Next Generation Space Telescope (NGST) to operate at 35 K.1 Previous low temperature measurements of thermal expansion have been limited to temperatures down to 77 K, except for the very low temperature studies of White et al.2,3,4

© 1999 Optical Society of America

Thermal expansion and length stability of Zerodur in dependence on temperature and time

Otto Lindig and Wolfgang Pannhorst
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Expansion hysteresis upon thermal cycling of Zerodur

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

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Ultraprecise thermal expansion measurements of seven low expansion materials

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