PREPARING A VACUUM CHAMBER TO TRAP ATOMS, AND THE PRINCIPLES OF A MAGNETO-OPTICAL TRAP

Kavish Bhardwaj, Sourabh Sarkar, Surjya Prakash Ram +2 more

We have developed a method that enables loading a magneto-optical trap (MOT) in an ultrahigh vacuum environment. Nearly 1.0 × 108 atoms of 87Rb are trapped in the MOT at ∼2.0×10−10 Torr base pressure in the chamber. After the MOT loading, we have successfully demonstrated the working of a quadrupole magnetic trap in this chamber with a lifetime of ∼15 s.

S. aus-der-Wiesche, B. Ueberholz, Frank Strauch +2 more

Kavish Bharadwaj, Sourabh Sarkar, S. P. Ram +2 more

We have developed a compact setup which enables loading a magneto-optical trap (MOT) in ultra-high vacuum (UHV) environment. Nearly $1 \times 10^{8}$ atoms of $^{87}Rb$ are trapped in the MOT at $\sim 2 \times 10^{-10}$ Torr base pressure in the chamber. After the MOT loading, we have successfully demonstrated working of quadrupole magnetic trap in this chamber with a lifetime of $\sim 8 $ s

Jangra, Jagdish

Kanxing Weng, Bin Wu, Jiahong Lin +3 more

The realization of a compact magneto-optical trap (MOT) with a quartz vacuum chamber via ultra-low power of a cooling laser is reported. The dependence of the properties of the MOT on key experimental parameters is investigated. The efficiency of capturing atoms of the novel MOT is compared with that of the metal vacuum chamber. The compact quartz vacuum chamber can achieve a maximum rubidium ( 87 R b ) atomic loading rate of about 8 × 10 9 / s with less than 60 mW of the total power of cooling lasers, while the metal chamber obtains the maximum atomic loading rate of about 3 × 10 9 / s with more than 240 mW of the total power of cooling lasers. The compact apparatus avoids undesired effects found in a metal chamber, such as high power consumption and the magnetic-field eddy current effect. This compact MOT is helpful in the design of miniature atomic gravimeters.

Luís Gustavo Marcassa, Gregory I. Surdutovich, Marcos Oriá +4 more