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Laser cooling with a single laser beam and a planar diffractor

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Abstract

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 Rb87 atoms to 30μK.

© 2010 Optical Society of America

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