A scalable scanning transfer cavity laser stabilization scheme based on the Red Pitaya STEMlab platform

E Pultinevicius; M Rockenhäuser; F Kogel; P Groß; T Garg; O E Prochnow; T Langen

doi:10.1063/5.0169021

A scalable scanning transfer cavity laser stabilization scheme based on the Red Pitaya STEMlab platform

Rev Sci Instrum. 2023 Oct 1;94(10):103004. doi: 10.1063/5.0169021.

Authors

E Pultinevicius¹, M Rockenhäuser¹, F Kogel¹, P Groß¹, T Garg¹, O E Prochnow¹, T Langen¹

Affiliation

¹ Physikalisches Institut and Center for Integrated Quantum Science (IQST), Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.

PMID: 37791857
DOI: 10.1063/5.0169021

Abstract

Many experiments in atomic and molecular physics require simultaneous frequency stabilization of multiple lasers. We present a stabilization scheme based on a scanning transfer cavity lock that is simple, stable, and easily scalable to many lasers at minimal cost. The scheme is based on the Red Pitaya STEMlab platform, with custom software developed and implemented to achieve up to 100 Hz bandwidth. As an example demonstration, we realize simultaneous stabilization of up to four lasers and a reduction of long-term drifts to well below 1 MHz/h. This meets typical requirements, e.g., for experiments on laser cooling of molecules.