Abstract

We have used diode laser beams that counter- propagate against a thermal beam of Rb to decelerate the atoms to near-zero velocity and bunch their speeds into a very narrow range. As the atoms decelerate, their changing Doppler shift is compensated by increasing the laser frequency. This chirping is easily accomplished with diode lasers because of their strong frequency dependence on current.

© 1989 Optical Society of America

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