aqora

Development and Characterization of a Magneto-Optical Trap for Rubidium

John Martin Robinson, Yu Liu, David P. Shelton

Nevada State Undergraduate Research JournalOct 25, 20140 citations

Atomic transfer between two magneto-optical traps

María Martínez Valado, Alicia V. Carpentier, Humberto Michinel +3 more

We design an experiment to obtain a Bose-Einstein Condensate (BEC) using 87Rb atoms. Taking advantage of this setup, we develop a simple and efficient method to transfer atoms from a first Magneto- Optical-Trap(MOT) to a second one. Our system consists of two glass vacuum cells horizontally connected with a MOT aligned at the center of each cell. Once rubidium atoms are loaded into the first MOT, the pushig beam forces them to move forward to the second MOT. We use a near-resonant weak laser beam to make the atoms reach the second cell. MOT1 and MOT2 both run in retroreflected-three beam MOT configuration.We design an experiment to obtain a Bose-Einstein Condensate (BEC) using 87Rb atoms. Taking advantage of this setup, we develop a simple and efficient method to transfer atoms from a first Magneto- Optical-Trap(MOT) to a second one. Our system consists of two glass vacuum cells horizontally connected with a MOT aligned at the center of each cell. Once rubidium atoms are loaded into the first MOT, the pushig beam forces them to move forward to the second MOT. We use a near-resonant weak laser beam to make the atoms reach the second cell. MOT1 and MOT2 both run in retroreflected-three beam MOT configuration.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEMay 21, 20110 citations

Characterization of a Rubidium Magneto-Optical Trap

Wei Wen Yu, Brad Crochet, Gregory Carson +1 more

APSJun 1, 20070 citations

Loading and Compression of a Large Number of Rubidium Atoms Using a Semi-Dark Type Magneto-Optical Trap

Lan‐Sheng Yang, Bai-Tzeng Han, De-Sheng Hong +2 more

We have built an apparatus for setting up a double magneto-optical trap (double MOT) which allows more than 10 Rb atoms to be loaded in 15 seconds. This compact system consists mainly of a stainless steel chamber and a homemade glass cell. The two chambers are spatially separated by a small diameter transfer tube for differential pumping. The stainless steel chamber is maintained at a pressure of 10 Torr, enabling fast capturing of background Rb atoms. The optically cooled atomic clouds are pushed by a laser beam towards the glass cell which is in a much higher vacuum. Under this condition, the glass cell provides a rather long life time for holding the atoms. After the atoms are loaded in the temporarily bright MOT, a semi-dark type MOT compression is employed to reach a spatial density of 1×10 atoms/cm. The compressed atom clouds are further cooled by polarization gradient cooling to a temperature of 30 μK. The high phase space density cloud is suitable for experiments related to ultracold atoms.We have built an apparatus for setting up a double magneto-optical trap (double MOT) which allows more than 10 Rb atoms to be loaded in 15 seconds. This compact system consists mainly of a stainless steel chamber and a homemade glass cell. The two chambers are spatially separated by a small diameter transfer tube for differential pumping. The stainless steel chamber is maintained at a pressure of 10 Torr, enabling fast capturing of background Rb atoms. The optically cooled atomic clouds are pushed by a laser beam towards the glass cell which is in a much higher vacuum. Under this condition, the glass cell provides a rather long life time for holding the atoms. After the atoms are loaded in the temporarily bright MOT, a semi-dark type MOT compression is employed to reach a spatial density of 1×10 atoms/cm. The compressed atom clouds are further cooled by polarization gradient cooling to a temperature of 30 μK. The high phase space density cloud is suitable for experiments related to ultracold atoms.

Chinese Journal of PhysicsDec 1, 20073 citations

Laser cooling in a chip-scale platform

J. P. McGilligan, K. R. Moore, A. Dellis +7 more

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 4 mm-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.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 4 mm-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.

arXiv:2005.05818Applied Physics LettersAug 3, 202061 citations

A Study of Rubidium Atoms in a Magneto-Optical Trap

A. Pietiläinen, H. Ludvigsen, Hannu Talvitie +1 more

Jan 1, 19950 citations

Study of the Magneto-Optical Trap Using Rubidium with a Glass Cell

Related papers

Study of the Magneto-Optical Trap Using Rubidium with a Glass Cell

Related papers