Physical Sciences Inc. Publications Abstract: Characterization of a 'Hardened' Ultrastable UV Linear Variable Filter and Recent Results on the Radiometric Stability of Narrow Band Interference Filters Subjected to Temperature / Humidity, Thermal / Vacuum and Ionizing Radiation Environments

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Abstract: Characterization of a 'Hardened' Ultrastable UV Linear Variable Filter and Recent Results on the Radiometric Stability of Narrow Band Interference Filters Subjected to Temperature / Humidity, Thermal / Vacuum and Ionizing Radiation Environments

D.F. Heath, E. Hilsenrath, S. Janz, "Characterization of a 'Hardened' Ultrastable UV Linear Variable Filter and Recent Results on the Radiometric Stability of Narrow Band Interference Filters Subjected to Temperature / Humidity, Thermal / Vacuum and Ionizing Radiation Environments," presented at Remote Sensing of the Atmosphere and Clouds, 15-17 September 1998 (Beijing, China) , SPIE 3501 ( ) , 401-411 (1998).

This paper was published in Optical Remote Sensing of the Atmosphere and Clouds and is made avaialable as an electronic reprint with permission of SPIE. Single print or electronic copies for personal use only are allowed. Systematic or multiple reproduction, or distribution to multiple locations through an electronic listserver or other electronic means, or duplication of any material in this paper for a fee for commercial purposes is prohibited. By choosing to view or print this document, you agree to all the provisions of the copyright law protecting it.

Abstract

A series of in-band and out-of-band transmittance measurements of filters covering the wavelength range from 317 to 1019 nm and a linear variable filter for the 300 to 400 nm range have been made. The bandpass filters and the linear variable were fabricated using the ion-assisted-deposition or similar processes. The radiometric stability of the central wavelength, bandpass (FWHM), and peak transmittances were measured before and after exposures to combined high temperature and humidity, a thermal vacuum cycle, an ionizing particle radiation environment, flight on the Space Shuttle and at two temperature ranges. Representative radiative signal-to-noise ratios are given for solar irradiance observations with a silicon photodiode detector.

Keywords

Environmental effects on interference filters, linear variable filters, ultrastable interference filters,

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