J.a. Woollam Co.

University of Nebraska

Brooks A Hitt

Jeffrey S Hale

Martin M Liphardt

Craig M Herzinger

Ping He

Galen L Pfeiffer

Brian D Guenther

Timothy J Gay

Benjamin B Birdsey

Hermanus Batelaan

Christopher D Hassler

Ellipsometers and polarimeters and the like having at least one rotating element which is driven by a motor that comprises air bearings.

Ellipsometer or polarimeter system having at least one rotating element which is driven by a motor comprising air bearing

A reflectometer, ellipsometer, polarimeter or the like system with aperture, focusing means, sample and optionally detector planes oriented so that the Scheimpflug condition is substantially met on incident and/or, optionally, reflection sides of a sample. In addition beneficial aperture hole aspect ratio and aperture plane orientation is described.

Ellipsometer meeting scheimpflug condition with provision of an essentially circular electromagnetic radiation spot on a sample

Disclosed are a system, and method, for producing a directly extracted flow of preferred-spin-polarization-direction electrons. The present invention optically pumped electron spin filter system provides a mixture of, typically alkali, atoms and electron polarization direction enhancing buffer gas, to a, preferably, single chamber essentially enclosed space, into which essentially enclosed space is entered a predominately single handedness, preferably laser system produced, beam of photons which optically pumps electrons in atoms to a dark-ground state with a preferred-spin-polarization, that is maintained in the presence of an imposed magnetic field, which magnetic field is oriented essentially co-linear with said beam of predominately single polarized photons. Concurrently electrons are, by practice of the method of the present invention, generated in the essentially enclosed space by a buffer gas mediated electric discharge, and are caused to be in a preferred-spin-polarization-direction via pumped dark-ground state atom&mdash;electron collision mediated exchange mechanism(s), prior to being directly extracted.

Optically pumped direct extraction electron spin filter system and method of use

Growing community of inventors

Lincoln, NE, United States of America

Brooks A Hitt