Fast burst of infrared light opens a way for 3D processing inside semiconductor chips

https://techxplore.com/news/2022-11-fast-infrared-3d-semiconductor-chips.html

"non-conventional ultrafast bursts of pulses to circumvent metallization transition... split pulse energy into weaker pulses with extremely fast repetition rate... pulse trains avoid strong pulse excitation before light is focused... pulses repeat fast.. delivered laser energy accumulate efficiently... Refractive index engineering and Laser writing... may drastically change the way advanced micro-chips are today fabricated"