Transportable clock laser system with an instability of 1.6 × 10<sup>−16</sup>
Transportable clock laser system with an instability of 1.6 × 10<sup>−16</sup>
We present a transportable ultra-stable clock laser system based on a Fabry-Perot cavity with crystalline Al0.92Ga0.08As/GaAs mirror coatings, fused silica (FS) mirror substrates, and a 20 cm-long ultra-low expansion (ULE) glass spacer with a predicted thermal noise floor of mod σy = 7 × 10-17 in modified Allan deviation at …