Cs microcell optical reference at 459 nm with short-term frequency stability below 2 $\times$ 10${}^{-13}$

E. Klinger, C. M. Rivera-Aguilar, A. Mursa +3

We describe the short-term frequency stability characterization of external-cavity diode lasers stabilized onto the 6S${}_{1/2}$-7P${}_{1/2}$ transition of Cs atom at 459 nm, using a m…