Journal ArticleDOI
Dimensional Stability of Fused Silica, Invar, and Several Ultra-low Thermal Expansion Materials
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TLDR
In this paper, the length change vs time for several low thermal expansion materials maintained in evacuated environments at constant temperature (near 300 K) was measured over a period of 170 days to a precision of two to three parts in 109.Abstract:
We have measured length change vs time for several low thermal expansion materials maintained in evacuated environments at constant temperature (near 300 K). Materials were two types of fused silica, Cer-Vit, ULE, Zerodur, Invar, and super Invar. ΔL/L was measured over a period of 170 days to a precision of two to three parts in 109. In addition, we have measured time-dependent changes in optical contact interfaces and have placed an upper limit on drift of optical phase shift on reflection from multilayer dielectric coatings.read more
Citations
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Tuning the thermal expansion properties of optical reference cavities with fused silica mirrors
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References
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Journal ArticleDOI
The Spherical Mirror Fabry-Perot Interferometer
TL;DR: In this article, the theory, design and use of the confocal spherical mirror Fabry-Perot interferometer (FPS) is described in detail, and the performance of an FPS for small departures from confocal mirror separation, optimization of the (resolution) x (light gathering power) product, factors limiting realizable finesse, mode matching and alignment procedures are discussed.
Journal ArticleDOI
Description, performance, and wavelengths of iodine stabilized lasers.
TL;DR: Relationships between operational characteristics such as power output, peak size, and peak width are shown, along with their relationships to some of the controllable parameters such as excitation level, iodine absorption, and iodine pressure.
Journal ArticleDOI
Ultraprecise Measurement of Thermal Coefficients of Expansion
TL;DR: In this article, a method for determining thermal expansion coefficients was devised based on the dependence of Fabry-Perot resonances on the mirror separation, and the expansion sample was formed into an etalon spacer, with highly reflecting endplates optically contacted to each end.
Journal ArticleDOI
Factors influencing the relative frequency stabiltiy of He-Ne laser structures
TL;DR: In this paper, the drift rate of a He-Ne laser structure, made from ultralow expansion materials, suspended in temperature and pressure-controlled chambers, has been investigated and it was shown that relatively large changes of the dielectric constants of the mirror coatings are needed to explain the measured drift.
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