Fiber laser system for cesium and rubidium atom interferometry

TL;DR

This paper introduces a novel all-fiber laser system capable of manipulating cesium and rubidium atoms, using frequency conversion at specific wavelengths, with potential applications in portable atom interferometers involving multiple atomic species.

Contribution

The paper presents the first all-fiber laser system for cesium manipulation, combining frequency conversion at 1560 nm and 1878 nm to generate the required wavelengths.

Findings

Delivered 350 mW at 780 nm for rubidium

Produced 210 mW at 852 nm for cesium

Opened new possibilities for portable multi-species atom interferometers

Abstract

We present an innovative fiber laser system for both cesium and rubidium manipulation. The architecture is based on frequency conversion of two lasers at 1560 nm and 1878 nm. By taking advantage of existing fiber components at these wavelengths, we demonstrate an all fiber laser system delivering 350 mW at 780 nm for rubidium and 210 mW at 852 nm for cesium. This result highlights the promising nature of such laser system especially for Cs manipulation for which no fiber laser system has been reported. It offers new perspectives for the development of atomic instruments dedicated to onboard applications and opens the way to a new generation of atom interferometers involving three atomic species $^{85}$Rb, $^{87}$Rb and $^{133}$Cs for which we propose an original laser architecture.