Cs microcell optical reference at 459 nm with short-term frequency stability below 2 × 10−13

We describe the short-term frequency stability characterization of external-cavity diode lasers stabilized onto the 6S1/2−7P1/2 transition of Cs atoms at 459 nm, using a microfabricated vapor cell. The laser beatnote between two nearly identical systems, each using saturated absorption spectroscopy ... View More