We present a compact cold cesium beam source based on a two-dimensional plus magneto-optical trap with a hollow retarding light. The loss mechanism of the atom beam at the entrance of the pumping hole of the differential tube, which was neglected in previous similar configurations, is minimized in the configuration due to modification, resulting in higher pass efficiency for cold atoms. An atom beam flux of up to 2.5×1010 atoms/s is observed with a shorter transverse cooling length, which agrees with the numerical simulation qualitatively. The compact volume and high laser efficiency make it an ideal beam source for practical use.We present a compact cold cesium beam source based on a two-dimensional plus magneto-optical trap with a hollow retarding light. The loss mechanism of the atom beam at the entrance of the pumping hole of the differential tube, which was neglected in previous similar configurations, is minimized in the configuration due to modification, resulting in higher pass efficiency for cold atoms. An atom beam flux of up to 2.5×1010 atoms/s is observed with a shorter transverse cooling length, which agrees with the numerical simulation qualitatively. The compact volume and high laser efficiency make it an ideal beam source for practical use.

Journal of the Optical Society of America BApr 20, 20156 citations

Multistage two-dimensional magneto-optical trap as a compact cold atom beam source

Jaime Ramirez-Serrano, Nan Yu, James M. Kohel +2 more

A compact cold atom beam source based on a multistage two-dimensional magneto-optical trap (MOT) has been demonstrated and characterized. The multiple-stage design greatly reduces the overall size of the source apparatus while providing a high flux of atoms. The cold atom beam was used to load a separate MOT in ultrahigh vacuum, and we obtained an actual trap loading rate of 1.5 x 109 atoms/s while using only 20 mW of total laser power for the source. The entire source apparatus, including optics, can fit into a 4 cm x 4 cm x 13 cm volume.A compact cold atom beam source based on a multistage two-dimensional magneto-optical trap (MOT) has been demonstrated and characterized. The multiple-stage design greatly reduces the overall size of the source apparatus while providing a high flux of atoms. The cold atom beam was used to load a separate MOT in ultrahigh vacuum, and we obtained an actual trap loading rate of 1.5 x 109 atoms/s while using only 20 mW of total laser power for the source. The entire source apparatus, including optics, can fit into a 4 cm x 4 cm x 13 cm volume.

Optics LettersMar 15, 200619 citations

A Compact Dual-Beam Zeeman Slower for High-Flux Cold Atoms

Chen Chen, Kejun Liu, Dezhou Deng +6 more

We present a compact design of dual-beam Zeeman slower optimized for efficient production of cold atom applications. Traditional single-beam configurations face challenges from substantial residual atomic flux impacting downstream optical windows, resulting in increased system size, atomic deposition contamination, and a reduced operational lifetime. Our approach employs two oblique laser beams and a capillary-array collimation system to address these challenges while maintaining efficient deceleration. For rubidium ( $^{87}$ Rb), simulations demonstrate a significant increase in the fraction of atoms captured by a two-dimensional magneto-optical trap (2D-MOT) and nearly eliminate atom-induced contamination probability at optical windows, all within a compact Zeeman slower length of 44 cm. Experimental validation with Rb and Yb demonstrates highly efficient atomic loading within the same compact design. This advancement represents a substantial improvement for high-flux cold atom applications, providing reliable performance for high-precision metrology, quantum computation and simulation.We present a compact design of dual-beam Zeeman slower optimized for efficient production of cold atom applications. Traditional single-beam configurations face challenges from substantial residual atomic flux impacting downstream optical windows, resulting in increased system size, atomic deposition contamination, and a reduced operational lifetime. Our approach employs two oblique laser beams and a capillary-array collimation system to address these challenges while maintaining efficient deceleration. For rubidium ($^{87}$Rb), simulations demonstrate a significant increase in the fraction of atoms captured by a two-dimensional magneto-optical trap (2D-MOT) and nearly eliminate atom-induced contamination probability at optical windows, all within a compact Zeeman slower length of 44 cm. Experimental validation with Rb and Yb demonstrates highly efficient atomic loading within the same compact design. This advancement represents a substantial improvement for high-flux cold atom applications, providing reliable performance for high-precision metrology, quantum computation and simulation.

physics.atom-phCross-listedarXiv:2511.08193Physical Review AppliedNov 12, 20252 citations

^{87}

Rb), simulations demonstrate a significant increase in the fraction of atoms captured by a two-dimensional magneto-optical trap (2D-MOT) and nearly eliminate atom-induced contamination probability at optical windows, all within a compact Zeeman slower length of 44 cm. Experimental validation with Rb and Yb demonstrates highly efficient atomic loading within the same compact design. This advancement represents a substantial improvement for high-flux cold atom applications, providing reliable performance for high-precision metrology, quantum computation and simulation.