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Lightning-fast speeds:EDM systems achieve switching times faster than 50 ns.
Independent intensity adjustment:By rapidly turning the beam on and off with variable pulse widths, the EDM makes it easy to adjust the average beam intensity without changing the image conditions. A desktop accessory knob provides an intuitive interface to adjust the dose attenuation factor.
Dose structuring:Users can take control of their illumination by applying dose in pulses with variable durations as short as 100 ns and frequencies up to 1 MHz.
Modern control software:The EDM works out of the box as a fast beam blanker. Control software is included for programmable dose attenuation, logging, and more.
Integration:The EDM act as a fast reliable pre-sample beam blanker while supporting a companion Relativity Sub-Framing System as well as third-party hardware.
Pulsed beam TEM illumination*
Pulsed beam STEM Illumination*
Dose attenuation by pulsed illumination with Frequency of 500 kHz (2 μs) in a high resolution STEM at 300 kV using Si in the condition of pixel dwell time with 19 μs/pixel (1,024 x 1,024 pixels), by changing duration ration from 90% to 50% during acquisition of one STEM image in 20 s.
* Electrostatic Dose Modulator (EDM) offers two versions, EDM Basic and EDM Advanced. EDM Basic provides Pulsed Beam TEM Illumination, and EDM Advanced does both Pulsed Beam TEM Illumination and Pulsed Beam STEM Illumination.
Fast beam blanking
|Accelerating voltage||300 kV||200 kV||80 kV|
|Maximum pulse frequency||500 kHz||750 kHz||1 MHz|
|Transition time||<50 ns|
|Minimum pulse width||100 ns|
|Blanking signal inputs||3 inputs|
|Configuration||EDM Basic||EDM Advanced|
|Application||TEM imaging||TEM and STEM imaging, pump-probe dynamics|
|Pulse repetition frequency (Maximum)||62.5 kHz||500 kHz @300 keV, 1 MHz @200 keV|
|Pulse repetition period (Mimimum)||16 μs||2 μs|
|Pulse duration (Fastest)||125 ns||100 ns|
Applicable model: JEM-ARM300F2, JEM-ARM200F (CFEG), NEO ARM (CFEG), JEM-F200 (CFEG)
◆Click the "replay" button in the box above, and the movie will start（2.5 min.）◆