Integrated physics package of micromercury trapped ion clock with 10−14-level frequency stability
| Autor: | Christopher E. Holland, Nan Yu, Thai M. Hoang, Sehyun Park, Thanh Le, John D. Prestage, J. Gary Eden, Robert L. Tjoelker, Sung-Jin Park, Lin Yi, Sang K. Chung |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Applied Physics Letters. 119:044001 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | Mercury trapped ion clocks have demonstrated great long-term frequency stability and robustness. In this paper, we report a demonstration of an integrated 100-cc physics package in an effort to develop a micromercury trapped ion clock with high frequency stability. The physics package consists of a sealed 30-cc vacuum tube with one layer of magnetic shielding, light source, and detector assembly. A field emitter array and a 194-nm microplasma lamp were employed together with a microtrap tube to reduce the size and power consumption for a mercury trapped ion clock. We show that the 100-cc physics package is capable of providing a fractional frequency stability of 1×10−11τ−1/2 down to 5×10−14 after a few hours of integration. We also show a set of environmental sensitivity evaluations as well as the clock frequency retrace. |
| Databáze: | OpenAIRE |
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