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3 results on '"Barbara M Barrett"'

1. Cooled Infrared Dichroic Beamsplitters and Filters for the MIRI Spectrometer and Imager (5-29µm)

Author

Barbara M. Barrett, Richard Sherwood, and Gary John Hawkins

Subjects
Materials science, Fabrication, Spectrometer, Infrared, business.industry, Dichroism, Dichroic glass, law.invention, Optics, Band-pass filter, law, Optoelectronics, business, Diffraction grating, Beam splitter
Abstract

The spectral design and fabrication of cooled (7K) mid-infrared dichroic beamsplitters and bandpass filter coatings for the MIRI spectrometer and imager are described. Design methods to achieve the spectral performance and coating materials are discussed.

Published
2007

2. Mid-Infrared Filters for the Diviner Radiometer Experiment on the Lunar Reconnaissance Orbiter (7-40µm)

Author

Steven J. Wakeham, Gary John Hawkins, Barbara M. Barrett, and Richard Sherwood

Subjects
Radiometer, Materials science, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Mid infrared, law.invention, Orbiter, Optics, Cardinal point, Band-pass filter, law, business, Diviner, Remote sensing
Abstract

The spectral design and manufacture of precision mid-infrared bandpass filters for the JPL Diviner experiment focal plane array is described. Design methods to achieve the spectral requirements, selection of materials and physical construction are discussed. Article not available.

Published
2007
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3. High-performance infrared narrow-bandpass filters for the Indian National Satellite System meteorological instrument (INSAT-3D)

Author

Gary John Hawkins, Richard Sherwood, Barbara M. Barrett, S. Bisht, H. J. B. Orr, M. Wallace, and K. Matthews

Subjects
Infrared, business.industry, Materials Science (miscellaneous), Satellite system, Industrial and Manufacturing Engineering, law.invention, Metrology, Optics, Band-pass filter, Interference (communication), law, Filter (video), Environmental science, Business and International Management, business, Space research, Beam splitter, Remote sensing
Abstract

This paper describes the design and manufacture of a set of precision cooled (210 K) narrow-bandpass filters for the infrared imager and sounder on the Indian Space Research Organisation (ISRO) INSAT-3D meteorological satellite. We discuss the basis for the choice of multilayer coating designs and materials for 21 differing filter channels, together with their temperature-dependence, thin film deposition technologies, substrate metrology, and environmental durability performance.

Published
2008
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