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

Area of Science:

• Atomic and Molecular Physics
• Laser Spectroscopy

Background:

• Simultaneous frequency stabilization of multiple lasers is essential for advanced experiments in atomic and molecular physics.
• Existing methods can be complex, costly, and difficult to scale.

Purpose of the Study:

• To present a simple, stable, and scalable laser frequency stabilization scheme.
• To demonstrate simultaneous stabilization of multiple lasers at minimal cost.

Main Methods:

• Utilized a scanning transfer cavity lock technique.
• Implemented custom software on the Red Pitaya STEMlab platform.
• Achieved a control bandwidth of up to 100 Hz.

Main Results:

• Successfully demonstrated simultaneous stabilization of up to four lasers.
• Reduced long-term frequency drifts to below 1 MHz/h.
• The system is simple, stable, and easily scalable.

Conclusions:

• The presented stabilization scheme meets the stringent requirements for experiments like laser cooling of molecules.
• Offers a cost-effective solution for multi-laser frequency stabilization.