Re:Intel chief Pat Gelsinger: Too many chips made in Asia
by mjevans on Wednesday March 24, 2021 @11:18PM
(#26576215)
Lasers are an Electro-Magnetic emission of which the output is a synchronized at a specific and regular frequency.
If you have two lasers at about 700nm and 1000nm, and they 'start' at a synchronized point, then 7mm (7000nm) of emission later they'd have a repeat of the cycle begin again.
During that cycle the interference pattern would probably have an interesting shape, but I very much doubt it'd be useful for semiconductor production. Maybe a math or physics graduate could elaborate on if there's a name for this kind of pattern and if there are any uses I'm not aware of.
Re:Intel chief Pat Gelsinger: Too many chips made in Asia
by namibj on Thursday March 25, 2021 @02:29AM
(#26577102)
https://en.wikipedia.org/wiki/Interference_lithography exists, but it only uses a single laser with beam splitters, and typically for creating large diffraction gratings and such.
Re:Intel chief Pat Gelsinger: Too many chips made in Asia
by jleahy on Thursday March 25, 2021 @10:53AM
(#26581011)
That’s a linear mixing, non-linear allows for the absorption of two photons followed by the emission of one with twice the energy. That allows for a laser pumped frequency doubler.
Actually most consumer oriented lasers (for example green lasers) work like this, but I don’t know if it works for frequencies as high as soft x-rays.
Personally, I'm surprised that there aren't ways to generate this energy by nonlinear mixing of light from two lasers that are separated by the desired frequency.