Combined SSN/NOI: Flexible Laser Stabilization System

on, Mass Force Group in the Physical Measurement Laboratory (PML) has recently begun a collaboration with other NIST groups developing primary thermometers based on measurements of the Doppler effect in atomic gases, specifically cesium and ytterbium. Accurately extracting the thermodynamic temperat

ure from the Doppler absorption spectrum of a gas requires a laser-based optical frequency comb system with very low intensity, frequency, and phase noise. NIST requires a flexible digital laser servo to actively stabilize the laser system