兴趣驱动的原子钟研发需求
问题概述
用户希望在成本和相位噪声上介于晶振和铯原子钟之间，使用易获取的气体（如氖、氮、汞蒸气）自行构建原子钟参考源，同时对高精度光学原子钟的应用（如重力测量）表示兴趣。
痛点标签
- 高成本的原子钟难以在业余爱好者范围内实现
- 缺乏利用常见气体（如氖、氮、汞蒸气）构建的原子钟原型
- 希望在TCXO与Rb之间找到折中方案以改善相位噪声
待验证问题
- 您是否曾尝试自行构建原子钟或类似装置？
- 在选型时，您最看重的性能指标是成本、相位噪声还是稳定性？
- 您是否愿意参与或资助研发利用常见气体的原子钟原型？
证据
原话 · @Anonymous
Somewhat off-topic:I’ve often wondered if a hobby-class atomic clock can be built with “a less accurate gas” that is easy to excite and measure in a feedback loop simply because it’s available in a handy package that lends itself for experimentation without having to mess with melting glass and bottles of pressurised gas. E.g. neon, nitrogen or mercury vapour.The reason I’m asking is because in RF we often need a stable reference, and these come in a clear $ for phase noise relationship: RC, LC, xtal, TCXO, GPSDO, YIG, Rubidium, …Price-wise, all atomic clocks come after Rubidium. But would it be possible to build an atomic clock that sits between TCXO and Rb both for price and phase noise, by employing a non-exotic gas in a readily available lamp?
原话 · @Anonymous
A clock, not only to measure time, but gravity as well. It’s impressive that it can measure time dilation due to a height difference of 5mm
原话 · @Anonymous
The most impressive part for me is:Optical atomic clocks at the 10^-19 level are so precise they can detect the slowing of time caused by gravity over height differences of millimeters.
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