Laser cooling in a chip-scale platform
Laser cooling in a chip-scale platform
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DOI：
10.1063/5.0014658
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发表时间：
2020-08-03
影响因子：
4
通讯作者：
Kitching, J.
中科院分区：
文献类型：
--
作者：
McGilligan, J. P.;Moore, K. R.;Kitching, J.
围绕微加工碱蒸汽电池构建的芯片级原子器件处于紧凑型计量和原子传感器的最前沿。我们展示了一个微制造的蒸汽电池，主动抽到超高真空（UHV），以实现激光冷却。采用光栅磁光阱（GMOT）和4 mm厚的硅/玻璃真空室，实现了激光器小型化冷却平台的可行性。铷中的两步光激发过程用于克服GMOT成像的表面散射限制。微制造的UHV电池所提供的明确的小型化和形式可定制性为未来的紧凑型冷原子传感器提供了一个有前途的平台。
Chip-scale atomic devices built around micro-fabricated alkali vapor cells are at the forefront of compact metrology and atomic sensors. We demonstrate a micro-fabricated vapor cell that is actively pumped to ultra-high-vacuum (UHV) to achieve laser cooling. A grating magneto-optical trap (GMOT) is incorporated with a 4mm-thick Si/glass vacuum cell to demonstrate the feasibility of a fully miniaturized laser cooling platform. A two-step optical excitation process in rubidium is used to overcome surface-scatter limitations to the GMOT imaging. The unambiguous miniaturization and form-customizability made available with micro-fabricated UHV cells provide a promising platform for future compact cold-atom sensors.