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First Observation of High-harmonic Generation in Robust, Refractory Metals

2021-09-21

First Observation of High-harmonic Generation in Robust, Refractory Metals

Researchers combined titanium nitride, a refractory metal pioneered by the Shalaev-Boltasseva research groups, that has an exceptionally high laser tolerance, with extremely short laser pulses consisting of a mere few electric field oscillations. Titanium nitride’s 10-times larger laser tolerance than gold enabled researchers to hit it with high intensity radiation, emitting shorter wavelength...