Heating rates in a thin ion trap for microcavity experiments
Heating rates in a thin ion trap for microcavity experiments
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用于微腔实验的薄离子阱中的加热速率
DOI：
10.1007/s00340-012-5091-9
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
W. Lange
中科院分区：
文献类型：
--
作者：
E. Brama;A. Mortensen;M. Keller;W. Lange
我们已经建立并表征了一种新型的线性离子陷阱。它的小水平电极间距为250sμm，以前需要微加工方法，而我们的陷阱是传统机械加工的。薄陷阱的设计是为了容纳一个0.5 mm长的横向光学腔，这是在强耦合区域进行囚禁离子的腔-QED实验的要求。电极的夹层结构允许非常精确的对准。利用多普勒回旋方法，我们发现间歇性激光诱导辐射压力对离子光谱有显著的影响。为了正确确定疏水阀的加热速度，必须考虑到这一点。为此，我们导出了离子谱线形状的解析表达式，它考虑了自然谱线加宽、加热以及辐射压力的影响。我们应用它来确定系统的精确加热率。
We have built and characterized a novel linear ion trap. Its small horizontal electrode separation of 250 μm would previously have required microfabrication methods, while our trap was machined conventionally. The thin trap is designed to accommodate a transverse optical cavity of 0.5 mm length, a requirement for cavity-QED experiments with trapped ions in the strong coupling regime. The sandwich structure of the electrodes allows for a very accurate alignment. Employing the Doppler-recooling method, we found that intermittent laser-induced radiation pressure has a significant effect on the ion’s spectrum. This must be taken into account to correctly determine the heating rate of the trap. To this end, we have derived an analytic expression for the spectral line shape of the ion, which includes the effect of natural line broadening, heating as well as radiation pressure. We apply it to determine the accurate heating rate of the system.
影响因子：
1.6
作者：
Seymour-Smith, Nicolas;Blythe, Peter;Lange, Wolfgang
通讯作者：
Lange, Wolfgang