Periodic Reporting for period 1 - UltraStabLaserViaSHB (Ultra Frequency-Stable Laser via Spectral Hole Burning in Rare-earth Ion Doped Crystals)

With the redefinition of the Système International d’unités (SI) base units in 2019, the unit of the second (s) sees itself in a position of significance, where now, with the exception of the mole, all other SI base units are linked to the second [1]. Currently, the...