High-speed multiframe dynamic transmission electron microscope image acquisition system with arbitrary timing

Reed, Bryan W.; Dehope, William J; Huete, Glenn; LaGrange, Thomas B.; Shuttlesworth, Richard M

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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:: Reed, Bryan W.; Dehope, William J; Huete, Glenn; LaGrange, Thomas B.; Shuttlesworth, Richard M

Issue Date:: 2016-06-21

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1258006

Patent Number(s):: 9373479

Application Number:: 14/851,692

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2237/0432 - High speed and short duration
H01J2237/06333 - Photo emission
H01J2237/15 - Means for deflecting or directing discharge
H01J2237/151 - Electrostatic means
H01J2237/24455 - Transmitted particle detectors
H01J2237/2447 - Imaging plates
H01J2237/2449 - Detector devices with moving charges in electric or magnetic fields
H01J2237/24495 - Signal processing, e.g. mixing of two or more signals
H01J37/075 - Electron guns using thermionic emission from cathodes heated by particle bombardment or by irradiation, e.g. by laser
H01J37/1472 - {Deflecting along given lines}
H01J37/22 - Optical or photographic arrangements associated with the tube {
H01J37/244 - Detectors
H01J37/26 - Electron or ion microscopes
H01J37/265 - {Controlling the tube

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 2015 Sep 11

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 multiframe dynamic transmission electron microscope image acquisition system with arbitrary timing.  United States: N. p., 2016. 
        Web.

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                    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.

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                    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/1258006.

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@article{osti_1258006,

  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         = {2016},

  month        = {6}

}

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