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A comment on How once-elusive laser weapons suddenly became a reality.
https://en.wikipedia.org/wiki/Gas_dynamic_laser
The technology was invented in 1967 and the patent granted in 1974
https://patents.google.com/patent/US3801927
I can't find the reference offhand (Google isn't what it was), but the idea was to use the population inversion present in the exhaust of a jet fighter as a megawatt CO2 laser.
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https://en.wikipedia.org/wiki/Gas_dynamic_laser
The technology was invented in 1967 and the patent granted in 1974
https://patents.google.com/patent/US3801927
I can't find the reference offhand (Google isn't what it was), but the idea was to use the population inversion present in the exhaust of a jet fighter as a megawatt CO2 laser.