Polarimetry using liquid crystal variable retarders

Drouillard, Thomas F.; Searcy, Paul; Davis, Sumner P.; Uberna, Radoslaw; Herke, Richard A.; Anderson, Michael H.; Rommel, Scott D.; Anthony, Eric B.; Damiao, Valeria

doi:10.1117/12.524604

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…The advent of variable waveplate retarders using nematic liquid crystals offers a new alternative in this context, although such retarders have been in use for at least 10 years in Muellermatrix polarimeters [5,6,7]. Right and left hand polarized components are accessed directly by changing the wave retardance from λ/4 to 3λ/4 with the primary axis at 45 • to a linear polarizer.…”

Section: Liquid Crystal Retarder Polarimeter Designmentioning

confidence: 99%

Liquid crystal polarimetry for metastability exchange optical pumping of 3He

Maxwell

Epstein

Milner

2014

Nuclear Instruments and Methods in Physics Research Section A:

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We detail the design and operation of a compact, discharge light polarimeter for metastability exchange optical pumping of 3 He gas near 1 torr under a low magnetic field. The nuclear polarization of 3 He can be discerned from its electron polarization, measured via the circular polarization of 668 nm discharge light from an RF excitation. This apparatus measures the circular polarization of this very dim discharge light using a nematic liquid crystal wave retarder (LCR) and a high-gain, transimpedance amplified Si photodiode. We outline corrections required in such a measurement, and discuss contributions to its systematic error.

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Section: Liquid Crystal Retarder Polarimeter Designmentioning

confidence: 99%

Liquid crystal polarimetry for metastability exchange optical pumping of 3He

Maxwell

Epstein

Milner

2014

Nuclear Instruments and Methods in Physics Research Section A:

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“…While all boards are hosted inside the CCD camera case, the LCVRC is a stand-alone board hosted in a dedicated case (Polarimeter Electronics Box-PEB) near the KPol polarimeter (Rossi 2005;Drouillard et al 2005).…”

Section: Ccd Camerasmentioning

confidence: 99%

CCD cameras and Spacewire interfaces for HERSCHEL/SCORE suborbital mission

Gherardi

Romoli

Pace

et al. 2009

Astrophys Space Sci

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The HERSCHEL/SCORE is a suborbital mission which will observe the solar corona in UV and in visible light for measurements of solar corona. The coronagraph for such observation is an Italian instrument and, in particular, the CCD camera detectors are developed at the XUVLab of the Department of Astronomy and Space Science of Florence University. Such detectors communicate with the onboard computer by means the IEEE1355 Spacewire standard interface (developed in our laboratories) and implement a lot of smart and custom procedures for imaging.The main innovation of SCORE coronagraph is the first use in space of a variable retarder plate based on liquid crystals and the optical design capable of simultaneous observation in UV and Visible light.

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