Griffith W Clark, Knappe Svenja, Kitching John
Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA.
Opt Express. 2010 Dec 20;18(26):27167-72. doi: 10.1364/OE.18.027167.
We describe an optically pumped 87Rb magnetometer with 5 fT/Hz(1/2) sensitivity when operated in the spin-exchange relaxation free (SERF) regime. The magnetometer uses a microfabricated vapor cell consisting of a cavity etched in a 1 mm thick silicon wafer with anodically bonded Pyrex windows. The measurement volume of the magnetometer is 1 mm3, defined by the overlap region of a circularly polarized pump laser and a linearly polarized probe laser, both operated near 795 nm. Sensitivity limitations unique to the use of microfabricated cells are discussed.
我们描述了一种光泵浦87Rb磁力仪，当在无自旋交换弛豫（SERF）模式下运行时，其灵敏度为5 fT/Hz(1/2)。该磁力仪使用一个微加工的蒸汽室，它由在1毫米厚的硅晶片上蚀刻出的一个腔以及阳极键合的派热克斯玻璃窗口组成。磁力仪的测量体积为1立方毫米，由圆偏振泵浦激光和线偏振探测激光的重叠区域定义，两者都在795纳米附近运行。文中讨论了使用微加工腔室所特有的灵敏度限制。
