Stabilization of SiN Kerr Solitons for the calibration of astronomical spectrographs

We demonstrate a stabilization scheme for dissipative Kerr solitons in SiN-resonators achieving high comb stability and long-term operation. Measuring 10Hz level absolute Kerr comb line stability (at 1 second) close to the pump, resulting in kHz level stability in the spectral domain of NIR astronomical spectrographs.