Figure 2
From: Ultra-stable clock laser system development towards space applications
(a) Coordinates assigned to the cavity (top view). Grey colour is the breadboard on which the cavity vacuum chamber stands, the blue circle shows the body of the cavity and the red circles indicate the positions where the cavity is supported (please refer to ‘Methods → Optical cavity’ section for details). (b) Figure presenting the procedure of measuring the acceleration sensitivity along Z direction. The laser stayed locked to the cavity while the resonator was turned by 180° along X axis. The beat note against stationary system was recorded with a frequency counter and is visible on a spectrum analyser on top of each frame with a red arrow pointing at the peak. The span of the spectrum analyser is 1 MHz.
