激光冷却Rb原子及玻色-爱因斯坦凝聚的实验研究
文献类型：学位论文
| 作者 | 周蜀渝 |
| 学位类别 | 硕士 |
| 答辩日期 | 2005 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 王育竹 |
| 关键词 | 原子冷却和囚禁，玻色一爱因斯坦凝聚，非线性光谱 |
| 其他题名 | The experimental research about laser cooling rubidium atoms and Bose-Einstein condensation |
| 中文摘要 | 本文的内容是关于冷原子与玻色一爱因斯坦凝聚体的制备及物理性质的实验研究。我们对原实验平台的光路、磁场线圈、电流控制系统、真空系统等进行了改进。解决了原线圈骨架在囚禁磁场开启和关断时感应出涡旋电流的缺陷;系统的光学和电流稳定性得到提高:角于超高真空磁光阱的吸收池的真空度提高到2XI0-9Pa;发展了两种稳频和移频方式:利用计算机采样一输出实现钦宝石激光器稳频;将采样一保持芯片用于激光移频过程。超高真空磁光阱中俘获超过4X108个原子，7XI07，转移到QUIC阱中，在此实验平台上己获得玻色一爱因斯坦凝聚体。 |
| 英文摘要 | In this paper, cold atoms and Bose-Einstein condensates have been produced and their physical properties been studied. The optical, magnetic, current controlling, and vacuum systems of the original experimental device have been reformed. Eddy currents in the mounts of coils when switching the trapping field on or off have been eliminated. The stability of optical and electronic systems has been improved. The vapor cell of UHV MOT has been pumped to a pressure of Z X 10-9Pa. We developed two laser frequency locking and shifting methods: By using used a computer sampling and outputting control voltage, the frequency of the Ti aapphire user has been stabilized; Using a sample-and-hold circuit, the error signal can be held by the circuit during frequency shifting. It can avoid the restraint of locking or even lock-losing caused by the servo circuit when we input a step-up voltage into PZT to achieve laser frequency shifting. We have achieved a Bose-Einstein condensate in the new experimental setup. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16839]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 周蜀渝. 激光冷却Rb原子及玻色-爱因斯坦凝聚的实验研究[D]. 中国科学院上海光学精密机械研究所. 2005. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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