1) Caesium Frequency Standard
铯频标
2) Cesium beam frequency standard
铯束频标
1.
A portable laser system,continually working for very long period,is the key part in realization of an optically pumped cesium beam frequency standard.
长期连续工作的轻便激光系统是实现实用的光抽运铯束频标的关键。
2.
In the experimental system of diffused laser light field pumped sharp angle incidence laser light probing small cesium beam frequency standard, the light frequency shift (mainly the AC Stark shift) caused by diffused laser light comes from the diffused laser light field, and the light frequency shift caused by fluorescent light comes from the pumping region have been measured carefully.
在弥漫激光场抽运斜入射光检测小型铯原子束频标实验系统上 ,对弥漫激光场产生的散射光所引起的光频移 (主要是交流斯塔克移动 )以及光抽运区产生的荧光引起的光频移对铯束频标准确度的影响作了仔细的实验测量 ,并与理论计算结果作了比较分析。
3.
A portable laser system, continually working for very long period, is the key part in realization of an optically pumped cesium beam frequency standard.
长期连续工作的袖珍激光系统是实现实用的光抽运铯束频标的关键。
3) cesium frequency standard
铯频率标准
4) cesium fountain frequency standard
铯原子喷泉频标
1.
Relativistic Frequency Shifts in a Cesium Fountain Frequency Standard;
铯原子喷泉频标的相对论频移
2.
Resonance frequency shifts due to radiation fields in the laser-cooled cesium fountain frequency standard, such as the frequency shifts due to microwave spectral impurity, Bloch-Siegert effect, neighboring π transitions, Stark effect, black- body radiation and Majorana transitions, are investigated, with formulas for eval- uating the shifts presented.
研究所得结果对于正确评定铯原子喷泉频标的准确度和探索提高其准确度的途径具有重要意义，对于铯原子喷泉频标的设计也具有现实的指导意义。
3.
In addition, the effect of the frequency shift due to blackbody radiation on the accuracy of the laser cooled cesium fountain frequency standard is analyzed.
研究了激光冷却铯原子喷泉频标的黑体辐射频移 (包括黑体辐射塞曼频移和黑体辐射斯塔克频移 ) ,推导了频移的计算公式 ,估算了室温下频移及其不确定度的大小 ,分析了黑体辐射频移对频标准确度的影响。
5) optical pumped cesium frequency standard
光抽运铯束频标
1.
A set of external cavity diode laser (ECDL) with a Littman-Metcalf configuration, which will be used for the optical pumped cesium frequency standard, is reported in this paper.
本文阐述了应用于激光抽运铯束频标的Littman-Metcalf外腔结构的外腔半导体激光器的研究情况。
6) cesium-beam frequency standard
铯射束频率标准
补充资料：氢原子频标
氢原子频标
hydrogen atomicfrequency standard
qing yUanzi Pinbico氮原子频标(hy枷罗n ato而c份呵uencystan-d田心)利用氢原子自发跃迁制成的频标。所选择的能级为氢原子基态的(1，0)和(0，0)两个超精细能级，对应跃迁频率为1 420405752HZ。原子谐振器的工作原理为磁选态，并采用六极磁铁。与饱原子频标不同的是，氢原子频标是主动型，即不用人工产生感应跃迁所需的激励信号，而可以自激振荡，故氢原子频标又称为氢脉泽。处在(1，0)能级上的氢原子进人一个高p值的谐振腔，腔内存在着各种频率的噪声。在频率为14加如5752HZ的噪声信号的感应下原子向(0，0)能级跃迁，辐射出一部分能量，加强原来的噪声信号，然后又进一步感应跃迁辐射，依此循环下去，很快就在谐振腔内建立起较强的振荡信号，通过藕合环摘出后进一步放大即可使用。电子路线装置的作用是把晶振抽出的5xl护MHZ信号综合到14为xl护M旧压，与原子跃迁后建立起来的信号进行鉴相，最后锁定晶振的sxl护MHZ信号，使两者具有相同的准确度。氢原子跃迁频率受外界的影响较大，且影响量难于准确测定和修正，故其频率准确度只能做到10一’2量级，若要进一步提高其准确度，需用艳原子时频基准进行校准。但氮原子频标的稳定度，无论长期还是短期，都比艳频标好，秒级可到10一’3，1天以上稳定度可达10一’5，特别适合于作优良的守时钟。由于价格贵，体积大，其应用没有艳原子频标广泛。(马风鸣)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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