I know that pattern generator device (no pattern generator software) is needed to generate a model signal system that help you use electron diffraction for wafer surface printing by the use of the TEM. These signals are templates called patterns and is generated by some electronic unknown components inside of pattern generator, maybe with an amplifier or oscillator
I don't understand what modulation system allow this "driving" signal between this different devices (TEM, pattern generator, computer..) to generate correctly template-pattern for final printing on wafer ?
To print a chip project from design (software) you need to generate a modulation to communicate with pattern generator device and this pattern generator device needs to communicate with TEM but you need still a modulation to tell what TEM should print and how to print
What type of modulation or what system/component is used to modulate different signals between this devices ?
Indeed we must generate an interference before
Diffraction cannot be explained using a particle view of light (geometrical or ray optics); it requires a wave interpretation (physical optics), according to which any image is actually an interference pattern formed by light rays that take different paths to reach the same point in the image
But still before generating this interference to have correct diffraction electrons used to print a pattern on wafer (we use a TEM system) you need a correct modulation.
What and how signal generating check if this modulation system is correct to ensure that the devices understand each other ?
One of technique use something like
Electron backscatter diffraction