Optical pumping of trapped neutral molecules by blackbody radiation

被引:75
作者
Hoekstra, Steven
Gilijamse, Joop J.
Sartakov, Boris
Vanhaecke, Nicolas
Scharfenberg, Ludwig
van de Meerakker, Sebastiaan Y. T.
Meijer, Gerard
机构
[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
[2] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
关键词
D O I
10.1103/PhysRevLett.98.133001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Optical pumping by blackbody radiation is a feature shared by all polar molecules and fundamentally limits the time that these molecules can be kept in a single quantum state in a trap. To demonstrate and quantify this, we have monitored the optical pumping of electrostatically trapped OH and OD radicals by room-temperature blackbody radiation. Transfer of these molecules to rotationally excited states by blackbody radiation at 295 K limits the 1/e trapping time for OH and OD in the X-2 Pi(3/2), v('')=0, J('')=3/2(f) state to 2.8 and 7.1 s, respectively.
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页数:4
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