A compact, robust, and transportable ultra-stable laser with a fractional frequency instability of $1\times 10^{-15}$

Qun-Feng Chen, Alexander Nevsky, Marco Cardace +5

We present a compact and robust transportable ultra-stable laser system with minimum fractional frequency instability of $1\times 10^{-15}$ at integration times between 1 to 10 s. T…