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Title: High-speed multi-frame dynamic transmission electron microscope image acquisition system with arbitrary timing

Abstract

An electron microscope is disclosed which has a laser-driven photocathode and an arbitrary waveform generator (AWG) laser system ("laser"). The laser produces a train of temporally-shaped laser pulses each being of a programmable pulse duration, and directs the laser pulses to the laser-driven photocathode to produce a train of electron pulses. An image sensor is used along with a deflector subsystem. The deflector subsystem is arranged downstream of the target but upstream of the image sensor, and has a plurality of plates. A control system having a digital sequencer controls the laser and a plurality of switching components, synchronized with the laser, to independently control excitation of each one of the deflector plates. This allows each electron pulse to be directed to a different portion of the image sensor, as well as to enable programmable pulse durations and programmable inter-pulse spacings.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1239655
Patent Number(s):
9269527
Application Number:
14/653,138
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 14
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE

Citation Formats

Reed, Bryan W., DeHope, William J., Huete, Glenn, LaGrange, Thomas B., and Shuttlesworth, Richard M. High-speed multi-frame dynamic transmission electron microscope image acquisition system with arbitrary timing. United States: N. p., 2016. Web.
Reed, Bryan W., DeHope, William J., Huete, Glenn, LaGrange, Thomas B., & Shuttlesworth, Richard M. High-speed multi-frame dynamic transmission electron microscope image acquisition system with arbitrary timing. United States.
Reed, Bryan W., DeHope, William J., Huete, Glenn, LaGrange, Thomas B., and Shuttlesworth, Richard M. Tue . "High-speed multi-frame dynamic transmission electron microscope image acquisition system with arbitrary timing". United States. https://www.osti.gov/servlets/purl/1239655.
@article{osti_1239655,
title = {High-speed multi-frame dynamic transmission electron microscope image acquisition system with arbitrary timing},
author = {Reed, Bryan W. and DeHope, William J. and Huete, Glenn and LaGrange, Thomas B. and Shuttlesworth, Richard M.},
abstractNote = {An electron microscope is disclosed which has a laser-driven photocathode and an arbitrary waveform generator (AWG) laser system ("laser"). The laser produces a train of temporally-shaped laser pulses each being of a programmable pulse duration, and directs the laser pulses to the laser-driven photocathode to produce a train of electron pulses. An image sensor is used along with a deflector subsystem. The deflector subsystem is arranged downstream of the target but upstream of the image sensor, and has a plurality of plates. A control system having a digital sequencer controls the laser and a plurality of switching components, synchronized with the laser, to independently control excitation of each one of the deflector plates. This allows each electron pulse to be directed to a different portion of the image sensor, as well as to enable programmable pulse durations and programmable inter-pulse spacings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {2}
}

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