CSOC

CSOC wants to make a chip-scale atomic optical clock. Here, an on-chip mode-locked laser at 1310 nm is used to pump a silicon nitride resonator. The generated octave spanning comb is sent to a 1f-to-2f on-chip interferometer to determine the carrier-envelope offset of the comb through self-referencing. Further, the light of an on-chip frequency doubled narrow linewidth Distributed Feedback (DFB) laser is locked to an Rb transition in vapor as a second reference. These error signals, together with the comb's repetition rate frequency, allow to synthesize the clock signal.

Primary location: Martinsried Germany