title: A streak camera based fiber optic pulsed polarimetry technique for magnetic sensing to sub-mm resolution.
abstract: The technique of fiber optic pulsed polarimetry, which provides a distributed (local) measurement of the magnetic field along an optical fiber, has been improved to the point where, for the first time, photocathode based optical detection of backscatter is possible with sub-mm spatial resolutions. This has been realized through the writing of an array of deterministic fiber Bragg gratings along the fiber, a so-called backscatter-tailored optical fiber, producing a 34 000-fold increase in backscatter levels over Rayleigh. With such high backscatter levels, high repetition rate lasers are now sufficiently bright to allow near continuous field sensing in both space and time with field resolutions as low as 0.005 T and as high as 170 T over a ∼mm interval given available fiber materials.
authors.affiliation: Department of Aeronautics and Astronautics, University of Washington, Seattle, Washington 98195, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Smith
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: T E
authors.initials: TE
authors.lastname: Weber