title: Soft-x-ray polarimeter with multilayer optics: complete analysis of the polarization state of light.
abstract: The design of a versatile high-precision eight-axis ultrahigh-vacuum-compatible polarimeter is presented. This multipurpose instrument can be used as a self-calibrating polarization detector for linearly and circularly polarized UV and soft-x-ray light. It can also be used for the characterization of reflection or transmission properties (reflectometer) or polarizing and phase-retarding properties (ellipsometer) of any optical element. The polarization properties of Mo/Si, Cr/C, Cr/Sc, and Ni/Ti multilayers used in this polarimeter as polarizers in transmission and as analyzers in reflection have been investigated theoretically and experimentally. In the soft-x-ray range, close to the p edges of Sc, Ti, and Cr, resonantly enhanced phase retardation of the transmission polarizers of as much as 18 degrees has been measured. With these newly developed optical elements the complete polarization analysis of soft-x-ray synchrotron radiation can be extended to the water-window range from 300 to 600 eV.
authors.affiliation: Bessy Electronenspeicherring-Gesellschaft fur Synchrotronstrahlung mbH, Lentzeallee 100, D-14195 Berlin.
authors.forename: F
authors.initials: F
authors.lastname: Schäfers
authors.forename: H C
authors.initials: HC
authors.lastname: Mertins
authors.forename: A
authors.initials: A
authors.lastname: Gaupp
authors.forename: W
authors.initials: W
authors.lastname: Gudat
authors.forename: M
authors.initials: M
authors.lastname: Mertin
authors.forename: I
authors.initials: I
authors.lastname: Packe
authors.forename: F
authors.initials: F
authors.lastname: Schmolla
authors.forename: S
authors.initials: S
authors.lastname: Di Fonzo
authors.forename: G
authors.initials: G
authors.lastname: Soullié
authors.forename: W
authors.initials: W
authors.lastname: Jark
authors.forename: R
authors.initials: R
authors.lastname: Walker
authors.forename: X
authors.initials: X
authors.lastname: Le Cann
authors.forename: R
authors.initials: R
authors.lastname: Nyholm
authors.forename: M
authors.initials: M
authors.lastname: Eriksson