Optical pumping of trapped neutral molecules by blackbody radiation.
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.
Hoekstra
Steven
S
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
Gilijamse
Joop J
JJ
Sartakov
Boris
B
Vanhaecke
Nicolas
N
Scharfenberg
Ludwig
L
van de Meerakker
Sebastiaan Y T
SY
Meijer
Gerard
G