Deceleration of a continuous-wave （CW） molecular beam with a single quasi-CW semi-Gaussian laser beam

Wade G. Rellergert, Eric Hudson

Andrew M. Jayich, Gary Chen, Xueping Long +2 more

Xiang Ji, Yaling Yin, Qi Zhou +2 more

Xueping Long, Andrew M. Jayich, Wesley C. Campbell

Yin Ya-Ling, Yong Xia, Yin Jian-Ping

We propose a promising scheme to decelerate a CW molecular beam by using a red-detuned quasi-cw semi-Gaussian laser beam (SGB). We study the dynamical process of the deceleration for a CW deuterated ammonia (ND 3 ) molecular beam by Monte–Carlo simulation method. Our study shows that we can obtain a ND 3 molecular beam with a relative average kinetic energy loss of about 10% and a relative output molecular number of more than 90% by using a single quasi-cw SGB with a power of 1.5kW and a maximum optical well depth of 7.33mK.

Yaling Yin, Yong Xia, Jianping Yin

We propose a promising scheme to decelerate a cw filtering out molecular beam using a red-detuned quasi-cw semi-Gaussian laser beam. By using Monte-Carlo simulation method, we demonstrate this optical Stark deceleration scheme, and study its decelerated dynamic process for a cw ND3 molecular beam as well as the dependence of the deceleration effect on the border width of the semi-Gaussian beam. Our study shows that the proposed scheme can be used to efficiently slow a cw ND3 molecular beam, and obtain a relative average kinetic-energy loss of 9.33% by using a single semi-Gaussian beam with a well depth of 7.3 mK.