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基于衍射光学器件的芯片尺度激光冷却原子研究

段俊毅 朱振东 周亚东 刘小赤 茹宁 屈继峰

段俊毅,朱振东,周亚东,等. 基于衍射光学器件的芯片尺度激光冷却原子研究[J]. 计量科学与技术,2021, 65(10): 10-14, 40 doi: 10.12338/j.issn.2096-9015.2020.9025
引用本文: 段俊毅,朱振东,周亚东,等. 基于衍射光学器件的芯片尺度激光冷却原子研究[J]. 计量科学与技术,2021, 65(10): 10-14, 40 doi: 10.12338/j.issn.2096-9015.2020.9025
DUAN Junyi, ZHU Zhendong, ZHOU Yadong, LIU Xiaochi, RU Ning, QU Jifeng. Chip-Scale Laser-Cooling Atoms based on Diffractive Optical Elements[J]. Metrology Science and Technology, 2021, 65(10): 10-14, 40. doi: 10.12338/j.issn.2096-9015.2020.9025
Citation: DUAN Junyi, ZHU Zhendong, ZHOU Yadong, LIU Xiaochi, RU Ning, QU Jifeng. Chip-Scale Laser-Cooling Atoms based on Diffractive Optical Elements[J]. Metrology Science and Technology, 2021, 65(10): 10-14, 40. doi: 10.12338/j.issn.2096-9015.2020.9025

基于衍射光学器件的芯片尺度激光冷却原子研究

doi: 10.12338/j.issn.2096-9015.2020.9025
基金项目: 国家自然科学基金青年基金资助项目(62005261);国家自然科学基金资助项目(61975194)
详细信息
    作者简介:

    段俊毅(1989-),中国计量科学研究院博士后,研究方向:原子分子物理,邮箱:duanjy@nim.ac.cn

    通讯作者:

    刘小赤(1987-),中国计量科学研究院副研究员,研究方向:原子分子物理,邮箱:liuxc@nim.ac.cn

Chip-Scale Laser-Cooling Atoms based on Diffractive Optical Elements

  • 摘要: 冷原子系统为量子精密测量过程提供了一种接近于静止的测量介质,从而避免了热原子工作介质中存在的频移和展宽,使得测量结果更加精确。但是目前量子精密测量系统中原子冷却部分体积庞大、结构复杂,不利于实现可分发量子计量标准系统的小型化。为了解决现有磁光阱系统复杂的问题,采取衍射光栅芯片与原子冷却俘获相结合的方案,通过线性光栅对单束入射光波进行相位调制,成功实现芯片尺度下原子的冷却。微小型化磁光阱核心芯片的制备,搭建了光学结构简单的磁光阱系统,为未来进一步实现磁光阱整体系统微小型化奠定了坚实基础。
  • 图  1  光栅磁光阱结构示意图

    Figure  1.  Structure of a grating MOT

    图  2  光栅衍射原理图

    Figure  2.  Schematic diagram of grating diffraction

    图  3  光栅芯片样品及SEM结构观察结果

    Figure  3.  Structure of a grating chip under SEM

    图  4  冷却光及再泵浦光路示意图

    Figure  4.  Apparatus setup of the cooling and repump beam

    图  5  冷原子团荧光信号及入射光栅芯片的光路图示

    Figure  5.  Fluorescence of cold Rb atoms and the incident beam on the grating chip

    图  6  不同冷却光功率下冷原子荧光的情况

    Figure  6.  Fluorescence of cold Rb atoms with different incident cooling beam power

    表  1  光栅芯片衍射角及衍射效率测量结果

    Table  1.   Measurement results of the diffraction angle and efficiency of the grating chip

    光栅区域123
    衍射角θ34.8°34.5°34.3°
    衍射效率η43.5%41.1%42.2%
    下载: 导出CSV
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出版历程
  • 网络出版日期:  2021-04-28
  • 刊出日期:  2021-10-18

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