Methods and devices for measuring orbital angular momentum states of electrons
Patent
·
OSTI ID:1438423
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.
- Research Organization:
- Univ. of Oregon, Eugene, OR (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- SC0010466
- Assignee:
- University of Oregon (Eugene, OR)
- Patent Number(s):
- 9,960,008
- Application Number:
- 15/632,131
- OSTI ID:
- 1438423
- Resource Relation:
- Patent File Date: 2017 Jun 23
- Country of Publication:
- United States
- Language:
- English
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