Atoms Caught in Optical Dipole Trap (IMAGE)
Caption
Rubidium atoms are held in place using a pair of laser beams at a wavelength of 1064 nm. Two other beams, promote the atoms from their ground state (5s) first to the 5p state and then to the still higher 18 s state. - See more at: http://jqi.umd.edu/news/magic-wavelengths#sthash.GGwhXrVu.dpuf
Credit
Kelley/JQI
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