Flight model of Pharao's Laser Source delivered to CNES
In January, Sodern delivered the flight model of Pharao’s Laser Source to CNES. Pharao is a cold atom clock for fundamental research on the ISS, able to reach the ultimate accuracy of 1 second in 300 millions years.
Sodern has already delivered the Caesium Tube flight model, in which atoms are cooled down to a temperature in the µK range. The caesium atoms operations in the tube need 14 accurately stabilized laser signals, made by the so-called “Laser Source”, a complex double side optical bench.