| 摘要 |
An expandable sealed chamber and method for contact bonding optical components, suitable for electronic and optical applications such as a closed core tunable etalon. There is a spring bellows tube core with open end collars where the collar spacing is controlled by external piezo elements. Opposing tophat components are contact bonded to the collars so as to define an airgap within the chamber. The collars are fabricated of material having a coefficient of thermal expansion closely matched to that of the tophat components, and the collar end planes are prepared with a sputtered deposition layer of the same material as the tophats and then milled to an optically smooth finish for contact bonding.
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