Characteristics of laser cooled one component plasma

为了研究离子动能小于相互势能的强耦合等离子体，我们研制了二极管激光系统和环形射频阱约束系统。采用窄线宽（<1MHz）的倍频激光二极管系统（397nm）对单组分等离子体进行冷却。利用含非线性LiIO_3晶体的环形激光系统，产生了高效次谐波的光功率。对单组分等离子体在环形射频阱中被二极管激光冷却后的约束特性进行了研究。

We have developed the diode laser system and the toroidal RF trap confinement system for a study of the strongly coupled plasma in which the kinetic energy of ions is smaller than the mutual potential energy of them. The frequency doubled laser diode system (397nm) with a narrow line width (<1MHz) is made to cool one component plasma.The optical power of efficient second harmonics is generated by using a ring laser system including a nonlinear crystal (LiIO_3). The investigation of the characteristics of the confinement of one component plasma in the toroidal RF trap when they are cooled down by the diode laser is underway.