Visible and near-infrared filters for miniaturized spectrometers

Details Visible and near-infrared filters for miniaturized spectrometers Visible and near-infrared filters for miniaturized spectrometers

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7018e.166p&link_type=abstract

Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Edited by Atad-Ettedgui, Eli; Lemke, Dietrich.

Computer Science

Scientific paper

The development of light-weight instrumentation for space-based measurements, involves an improvement in the production techniques of optical components. In this work the design and manufacturing of small-dimension variable filter is described. These visible-infrared filters are designed to be coupled to an array detector, in a way that each CCD line is able to detect the radiation in a different narrow radiation band. In this way a compact low-mass optical sensor is obtained that will be combined to a telescope for image spectrometry from space. The optical filters were manufactured by radiofrequency magnetron sputtering, with the aid of a masking system inside the vacuum chamber. Testing at cryogenic temperature proved their stability in the space environment conditions.

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