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High diffraction efficiency grating atom chip for magneto-optical trap
Magneto-optical traps based on grating chips can simplify cold atom physical package architectures significantly. Here we report the design and fabrication of a high-diffraction-efficiency grating magneto-optical trap (GMOT). The numerical simulation is performed with an optimized profile and measur...
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Published in: | Optics communications 2022-06, Vol.513, p.128087, Article 128087 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Magneto-optical traps based on grating chips can simplify cold atom physical package architectures significantly. Here we report the design and fabrication of a high-diffraction-efficiency grating magneto-optical trap (GMOT). The numerical simulation is performed with an optimized profile and measured refractive index of the gold film. In the design, the fabrication tolerance is also considered. The fabricated grating chip achieved a diffraction efficiency of up to 40%. Up to 2.8 × 107 are trapped with the chip, and the characterization of the GMOT is performed. High absorption contrast CPT resonance signal was also obtained. The proposed atom chip can be leveraged to realize compact cold atom clocks and other cold atom-based quantum sensors. |
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ISSN: | 0030-4018 1873-0310 |
DOI: | 10.1016/j.optcom.2022.128087 |