Laser cooling of cesium atoms: an experimental study of the magneto-optical trap

Muhammad Naeem Anwar

Swarupananda Pradhan, A. P. Marathe, Gaur, S J

Laser cooling and trapping o f cesium atoms using an indigenously developed magneto-optieal trap is reported.The experimental set up o f the trap and laser-cooling procedure adapted for eooling o f cesium atoms is discussed.

Junxian Fu, Xuzong Chen, Yi-min Li +2 more

A magneto-optical trap (MOT) for cesium atoms that operates without a separate repumping laser is reported. The differences between a normal MOT and this kind of MOT have been experimentally studied. The influences of a repumping laser on cooling and trapping cesium atoms in the MOT have been carefully investigated. The results reveal that it is the critical injection-locked state of the diode laser that makes magneto-optical trapping of cesium atoms possible without a separate repumping laser.

Christopher R. Monroe

Takeshi Ikegami, Takayuki Kurosu, Shinichi Ohshima +1 more

Present status of laser cooling experiments in NRLM is presented. Laser cooling and trapping experiments for cesium atoms are continued in NRLM to develop an atomic fountain frequency standard. As a first step, we performed Cs atomic beam deceleration and trapping experiments. Atomic beam cesium atoms were decelerated by counterpropagating radiation from semiconductor laser diodes. The laser frequency was chirped to keep it in resonance with the decelerated atoms. The decelerated atoms were trapped by six mutually orthogonal laser beams in a magneto-optical trap configuration. The atoms could also be trapped directly from ambient cesium gas in a glass cell without using the deceleration laser beam. The characteristics of the trapped atoms are reported.

J. W. R. Tabosa, G Chen, Zhongliang Hu +2 more