Display options
Cite
Dreiling JM, Burtwistle SJ, Gay TJ. New technique for the reduction of helicity-correlated instrumental asymmetries in photoemitted beams of spin-polarized electrons. Appl Opt. 2015;54(4):763-9doi: 10.1364/AO.54.000763.
Dreiling, J. M., Burtwistle, S. J., & Gay, T. J. (2015). New technique for the reduction of helicity-correlated instrumental asymmetries in photoemitted beams of spin-polarized electrons. Applied optics, 54(4), 763-9. https://doi.org/10.1364/AO.54.000763
Dreiling, J M, et al. "New technique for the reduction of helicity-correlated instrumental asymmetries in photoemitted beams of spin-polarized electrons." Applied optics vol. 54,4 (2015): 763-9. doi: https://doi.org/10.1364/AO.54.000763
Dreiling JM, Burtwistle SJ, Gay TJ. New technique for the reduction of helicity-correlated instrumental asymmetries in photoemitted beams of spin-polarized electrons. Appl Opt. 2015 Feb 01;54(4):763-9. doi: 10.1364/AO.54.000763. PMID: 25967786.
Copy Download .nbib Format: NLM
Share it on

Appl Opt. 2015 Feb 01;54(4):763-9. doi: 10.1364/AO.54.000763.

New technique for the reduction of helicity-correlated instrumental asymmetries in photoemitted beams of spin-polarized electrons.

Applied optics

J M Dreiling, S J Burtwistle, T J Gay

PMID: 25967786 DOI: 10.1364/AO.54.000763

Abstract

We present a new optical system that significantly reduces helicity-dependent instrumental intensity asymmetries. It is an extension of a previous scheme [Appl. Opt.47, 2465 (2008)], where one laser beam is split using a polarizing beam splitter into two with orthogonal linear polarizations. The beams are sent through a chopper, allowing only one to pass at a time. The two temporally separated beams are then spatially recombined using a second beam splitter. A liquid crystal retarder preceding the first beam splitter controls the relative intensity of the two oppositely polarized beams, allowing reduction of instrumental asymmetries. This system has been modified to include a spatial filter and a Pockels cell placed after the second beam splitter to act as a second active polarization element. Using this method, we can control instrumental asymmetries to ∼5×10(-7) in 1 h of data taking, which is comparable to the precision achieved in "second-generation" high energy electron-nuclear scattering parity violation experiments.

Publication Types