9.6 GHz ultra-low phase noise signal generation from a diode-pumped solid-state laser

We present ultra-low phase noise microwave generation based on a photonics oscillator. By using an ultra-narrow linewidth continuous-wave laser stabilized on a high-finesse optical cavity as a frequency reference, an optical frequency comb as an optical-to-microwave frequency divider and a photodiode for optical-to-electrical conversion, a 9.6 GHz carrier frequency signal has been generated with residual phase noise of -110 dBc/Hz and absolute phase noise below -165 dBc/Hz at 1 Hz and 1 MHz offset frequencies respectively. Further improvements of the system are under way.