Optimization of a magneto–optic trap using nanofibers

Wang Xin¹, Song Li-Jun¹, Wang Chen-Xi¹, Zhang Peng-Fei^{1, 2, †}, Li Gang^{1, 2}, Zhang Tian-Cai^{1, 2, ‡}

(a) Counting rate from the fluorescence of cold atoms as a function of axial magnetic gradient. The detuning of cooling beams is −11.6 MHz. (b) Counting rate from the fluorescence of cold atoms as a function of detuning. The axial magnetic gradient is 11.7 Gauss/cm. The intensities of cooling and re-pumping beams are 33.6 mW/cm² and 35.4 mW/cm² for both figures.