ar X iv : a st ro - p h / 03 05 27 1 v 1 1 5 M ay 2 00 3 1 UPDATED RESULTS ON PROTOTYPE CHALCOGENIDE FIBERS FOR 10 - μ M WAVEFRONT SPATIAL FILTERING
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چکیده
The detection of terrestrial planets by Darwin/TPF missions will require extremely high quality wave-fronts. Single-mode fibers have proven to be powerful beam cleaning components in the near-infrared, but are currently not available in the mid-infrared where they would be critically needed for Darwin/TPF. In this paper, we present updated measurements on the prototype chalcogenide fibers we are developing for the purpose of mid-infrared spatial filtering. We demonstrate the guiding property of our 3 rd generation component and we characterize its filtering performances on a 4 mm length: the far-field radiation pattern matches a Gaussian profile at the level of 3% rms and 13% pk-pk.
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تاریخ انتشار 2003