DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High-speed multiframe 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 of a predefined pulse duration and waveform, 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 two pairs of plates arranged perpendicular to one another. A control system 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 be provided with an independently set duration and independently set inter-pulse spacings.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1223694
Patent Number(s):
9165743
Application Number:
14/181,321
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:
42 ENGINEERING

Citation Formats

Reed, Bryan W., DeHope, William J., Huete, Glenn, LaGrange, Thomas B., and Shuttlesworth, Richard M. High-speed multiframe dynamic transmission electron microscope image acquisition system with arbitrary timing. United States: N. p., 2015. Web.
Reed, Bryan W., DeHope, William J., Huete, Glenn, LaGrange, Thomas B., & Shuttlesworth, Richard M. High-speed multiframe 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 multiframe dynamic transmission electron microscope image acquisition system with arbitrary timing". United States. https://www.osti.gov/servlets/purl/1223694.
@article{osti_1223694,
title = {High-speed multiframe 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 of a predefined pulse duration and waveform, 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 two pairs of plates arranged perpendicular to one another. A control system 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 be provided with an independently set duration and independently set inter-pulse spacings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {10}
}

Works referenced in this record:

Laser pulse generator
patent, July 2009


Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun
journal, August 2002


High-speed transmission electron microscope
journal, October 2003


The injection laser system on the National Ignition Facility
conference, February 2007


4D ultrafast electron microscopy: Imaging of atomic motions, acoustic resonances, and moiré fringe dynamics
journal, December 2009


Approaches for ultrafast imaging of transient materials processes in the transmission electron microscope
journal, November 2012


Nanosecond time-resolved investigations using the in situ of dynamic transmission electron microscope (DTEM)
journal, October 2008


Single-shot dynamic transmission electron microscopy
journal, July 2006


The Development of a Flexible Laser Platform for Photoemission based, High-Time Resolution Electron Microscopes
journal, July 2012


Partial nephrectomy with a combined CO2 and Nd:YAG laser: Experimental study in pigs
journal, January 1994


Multifocal laser surgery: Cutting enhancement by hydrodynamic interactions between cavitation bubbles
journal, October 2010


Generation of amplified picosecond square shaped pulses in ultraviolet region for an RF photocathode
conference, January 2002

  • Takasago, K.; Endo, A.; Yada, A.
  • Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Conference Edition, Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges
  • https://doi.org/10.1109/CLEO.2002.1034059

    Works referencing / citing this record: