An ultra-stable cryogenic sapphire cavity laser with an instability of $1.9\times 10^{-16}$ based on a low vibration level cryostat

Leilei He, Jingxuan Zhang, Zhiyuan Wang +4

Cryogenic ultra-stable lasers have extremely low thermal noise limits and frequency drifts, but they are more seriously affected by vibration noise from cryostats. Main material ca…