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Alignment and Polarization Sensitivity Study on the Cassini: CIRS FIR InterferometerThe Composite InfraRed Spectrometer (CIRS) instrument flying on the Cassini spacecraft to Saturn is a cryogenic spectrometer with far-infrared (FIR) and mid-infrared (MIR) channels. The CIRS FIR channel is a polarizing interferometer that contains three polarizing grid components. These components are an input polarizer, a polarizing beamsplitter, and an output polarizer/analyzer. They consist of a 1.5 micron thick mylar substrate with 2 microns wide copper wires, with 2 microns spacing (4 microns pitch) photolithographically deposited on the substrate. This paper details the alignment sensitivity studies performed on the polarizing beamsplitter, and the polarization sensitivity studies performed on all three polarizing components in the FIR interferometer.
Document ID
19990093015
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Crooke, Julie
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Hagopian, John
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Subject Category
Optics
Meeting Information
Meeting: Cryogenic Optical Systems and Instruments VIII
Location: San Diego, CA
Country: United States
Start Date: July 19, 1998
End Date: July 24, 1998
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other

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