Transportable 30 cm optical cavity

Abstract

Abstract: Ultra-stable lasers are generated by stabilizing their frequencies to the resonances of ultra-stable optical cavities. In ordertodevelopultra-stable clocks laser fortransportable optical clocks, transportable ultra-stable optical cavities are needed to be developed. Afterthe finite element analysis,the vibration-insensitive and structure-robust transportable optical cavitywas designed, whose length is 30 cm and is currently the longest among transportable optical cavities to our best knowledge. The vibration sensitivities of the cavity in three orthogonal directions were measured to be, along the cavity axis (horizontal), 1.4 × 10-10 g-1; cross the cavity (horizontal), 1.5× 10-10 g-1; cross the cavity (vertical), 1.2× 10-10 g-1. The cavity has slightly better vibration sensitivity compared with normal horizontal-placed optical cavities, and is more robustthuscan be mounted horizontally or vertically. The cavity can be used to develop atransportable optical clock.

Key words: laser technology;frequencystabilization, optical cavity, transportable

TAO Binkai1,2, CHEN Qunfeng1. Transportable 30 cm optical cavity[J]. Chinese Journal of Quantum Electronics.

References

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