Yulaev, A.
, Ropp, C.
, Kitching, J.
, Aksyuk, V.
and Hummon, M.
(2024),
Chip-scale sub-Doppler atomic spectroscopy enabled by a metasurface integrated photonic emitter, Applied Physics Letters, [online], https://doi.org/10.1063/5.0222456, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958069
(Accessed October 17, 2025)
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Chip-scale sub-Doppler atomic spectroscopy enabled by a metasurface integrated photonic emitter
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Author(s)
Alexander Yulaev, Chad Ropp, , ,
Abstract
We demonstrate chip-scale sub-Doppler spectroscopy in an integrated and fiber-coupled photonic-metasurface device. The device is a stack of three planar components: a photonic mode expanding grating emitter circuit with a monolithically integrated tilt compensating dielectric metasurface, a microfabricated atomic vapor cell and a mirror. The metasurface photonic circuit efficiently emits a 130 um wide (1/e2 diameter) collimated surface-normal beam with only -6.3 dB loss and couples the reflected beam back into the connecting fiber, requiring no alignment between the stacked components. We develop a simple model based on light propagation through the photonic device to interpret the atomic spectroscopy signals and explain spectral features covering the full Rb hyperfine state manifold.Citation
Applied Physics Letters
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Created September 19, 2024, Updated September 23, 2024