Laser
All magneto-optical accessories crave at diminutive one accoutrement laser additional any all-important repumper lasers (see above). These lasers charge stability, rather than top power, acute no added than the assimilation intensity, but a linewidth abundant beneath than the Doppler width, usually several megahertz. Because of their low cost, bunched admeasurement and affluence of use, laser diodes are acclimated for abounding of the accepted MOT breed while the linewidth and adherence of these lasers is controlled application servo systems, which stabilises the lasers to an diminutive abundance advertence by using, for example, saturated assimilation spectroscopy and the Pound-Drever-Hall address to accomplish a locking signal.
edit Exhaustion chamber
The MOT billow is loaded from a accomplishments of thermal vapour. However, the accoutrement abeyant in a magneto-optical allurement is baby in allegory to thermal energies of atoms and a lot of collisions amid trapped atoms and the accomplishments gas accumulation abundant activity to the trapped atom to bang it out of the trap. If the accomplishments burden is too high, atoms are kicked out of the allurement faster than they can be loaded, and the allurement does not form. This agency that the MOT billow alone forms in a exhaustion alcove with a accomplishments burden of beneath than 10 micropascals (10−10 bar).
All magneto-optical accessories crave at diminutive one accoutrement laser additional any all-important repumper lasers (see above). These lasers charge stability, rather than top power, acute no added than the assimilation intensity, but a linewidth abundant beneath than the Doppler width, usually several megahertz. Because of their low cost, bunched admeasurement and affluence of use, laser diodes are acclimated for abounding of the accepted MOT breed while the linewidth and adherence of these lasers is controlled application servo systems, which stabilises the lasers to an diminutive abundance advertence by using, for example, saturated assimilation spectroscopy and the Pound-Drever-Hall address to accomplish a locking signal.
edit Exhaustion chamber
The MOT billow is loaded from a accomplishments of thermal vapour. However, the accoutrement abeyant in a magneto-optical allurement is baby in allegory to thermal energies of atoms and a lot of collisions amid trapped atoms and the accomplishments gas accumulation abundant activity to the trapped atom to bang it out of the trap. If the accomplishments burden is too high, atoms are kicked out of the allurement faster than they can be loaded, and the allurement does not form. This agency that the MOT billow alone forms in a exhaustion alcove with a accomplishments burden of beneath than 10 micropascals (10−10 bar).
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