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A Compact Dual-Crystal Modulated Birefringence-Measurement System for Microgravity ApplicationsA compact modulated birefringence-measurement system has been developed for use in microgravity fluid physics applications with non-Newtonian fluids such as polymer solutions. This instrument uses a dual-crystal transverse electro-optical modulator capable of modulation frequencies in excess of 100 MHz. The two crystals are modulated 180 deg. out of phase from each other, The theoretical framework governing the development of this instrument using the Mueller-Stokes polarization matrices is discussed. Several ground-based experiments are performed to compare this system with the theoretical results. Results from this transverse electro-optical modulator-based birefringence-measurement system agree well with the theory. The instrument is also very stable and robust, making it suitable for the extreme acceleration environment to be encountered in a NASA Black Brandt sounding rocket.
Document ID
20000062853
Acquisition Source
Glenn Research Center
Document Type
Reprint (Version printed in journal)
Authors
Mackey, Jeffrey R.
(NASA Glenn Research Center Cleveland, OH United States)
Das, Kamal K.
(NASA Glenn Research Center Cleveland, OH United States)
Anna, Shelley L.
(Massachusetts Inst. of Tech. Cambridge, MA United States)
McKinley, Gareth H.
(Massachusetts Inst. of Tech. Cambridge, MA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Publication Information
Publication: Measurement Science and Technology
Publisher: IOP Publishing Ltd.
Volume: 10
ISSN: 0957-0233
Subject Category
Fluid Mechanics And Thermodynamics
Funding Number(s)
PROJECT: RTOP 101-33-00
CONTRACT_GRANT: NCC3-610
Distribution Limits
Public
Copyright
Other

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