Methods and devices for measuring orbital angular momentum states of electrons
Abstract
A device for measuring electron orbital angular momentum states in an electron microscope includes the following components aligned sequentially in the following order along an electron beam axis: a phase unwrapper (U) that is a first electrostatic refractive optical element comprising an electrode and a conductive plate, where the electrode is aligned perpendicular to the conductive plate; a first electron lens system (L1); a phase corrector (C) that is a second electrostatic refractive optical element comprising an array of electrodes with alternating electrostatic bias; and a second electron lens system (L2). The phase unwrapper may be a needle electrode or knife edge electrode.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Oregon, Eugene, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1438423
- Patent Number(s):
- 9960008
- Application Number:
- 15/632,131
- Assignee:
- University of Oregon (Eugene, OR)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- SC0010466
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2017 Jun 23
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
McMorran, Benjamin J., and Harvey, Tyler R. Methods and devices for measuring orbital angular momentum states of electrons. United States: N. p., 2018.
Web.
McMorran, Benjamin J., & Harvey, Tyler R. Methods and devices for measuring orbital angular momentum states of electrons. United States.
McMorran, Benjamin J., and Harvey, Tyler R. Tue .
"Methods and devices for measuring orbital angular momentum states of electrons". United States. https://www.osti.gov/servlets/purl/1438423.
@article{osti_1438423,
title = {Methods and devices for measuring orbital angular momentum states of electrons},
author = {McMorran, Benjamin J. and Harvey, Tyler R.},
abstractNote = {A device for measuring electron orbital angular momentum states in an electron microscope includes the following components aligned sequentially in the following order along an electron beam axis: a phase unwrapper (U) that is a first electrostatic refractive optical element comprising an electrode and a conductive plate, where the electrode is aligned perpendicular to the conductive plate; a first electron lens system (L1); a phase corrector (C) that is a second electrostatic refractive optical element comprising an array of electrodes with alternating electrostatic bias; and a second electron lens system (L2). The phase unwrapper may be a needle electrode or knife edge electrode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}
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