Laser cooling with a single laser beam and a planar diffractor.
A planar triplet of diffraction gratings is used to transform a single laser beam into a four-beam tetrahedral magneto-optical trap. This "flat" pyramid diffractor geometry is ideal for future microfabrication. We demonstrate the technique by trapping and subsequently sub-Doppler cooling (87)Rb atoms to 30 μK.
Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow G4 0NG, UK.
Matthieu
M
Vangeleyn
Paul F
PF
Griffin
Erling
E
Riis
Aidan S
AS
Arnold