Laser & Optoelectronics Progress, Volume. 55, Issue 4, 040201(2018)

Fabrication and Study of Micro Alkali-Metal Vapor Cell Applied to Chip Scale Atomic Clock

Yue Tang, Ziming Ren, Yunchao Li, Xuwen Hu, Yanjun Zhang, and Shubin Yan*
Author Affiliations
  • Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, North University of China, Taiyuan, Shanxi 030051, China
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    Figures & Tables(13)
    Diagram of ICP etching system
    [in Chinese]
    Deep silicon etching machine. (a) Picture; (b) schematic of inside
    Structures to be etched
    Flow chart of etching process
    Relationship between etching loop number and etching depth
    3D schematic of silicon pore structure
    Schematic of etching results
    Picture of bonded alkali-metal vapor cell
    Schematic of experimental principle for saturated absorption
    Saturated absorption of micro alkali-metal vapor cell under different temperatures. (a) 50 ℃; (b) 60 ℃; (c) 70 ℃; (d) 80 ℃
    (a) Schematic of D2 line transition in 87Rb atom; (b) saturated absorption curve of MEMS vapor cell at 80 ℃
    • Table 1. Main parameters of deep silicon etching

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      Table 1. Main parameters of deep silicon etching

      ProcessDurationtime /sPower 1 /WPower 2 /WNumber ofloopsFlow rate of SF6 /(mL·min-1)Flow rate of C4F8 /(mL·min-1)
      Deactivation125001601300
      Etching ofdeactivation layers1.5250022404001
      Main etching53500523009961
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    Yue Tang, Ziming Ren, Yunchao Li, Xuwen Hu, Yanjun Zhang, Shubin Yan. Fabrication and Study of Micro Alkali-Metal Vapor Cell Applied to Chip Scale Atomic Clock[J]. Laser & Optoelectronics Progress, 2018, 55(4): 040201

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    Paper Information

    Category: Atomic and Molecular Physics

    Received: Oct. 26, 2017

    Accepted: --

    Published Online: Sep. 11, 2018

    The Author Email: Yan Shubin (shubin_yan@nuc.edu.cn)

    DOI:10.3788/LOP55.040201

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