Innovation Academy for Precision Measurement Science and Technology, Cas

No. 717 Research Institute of China Shipbuilding Industry Corporation

Kangqi Liu

Fusheng Chen

Haicen Mao

Bin Wang

Jun Cheng

Linzhen Zhao

Chen Huang

Dou Li

Jiapeng Zhou

Songbai Kang

A method for compensating for frequency shifts caused by variation in an environmental parameter of an atomic clock is provided. A preset reference voltage of a proportional integral differential amplifier is set so that an offset frequency shift is generated in locking frequency of a laser. Then, the preset reference voltage is optimized by correcting the frequency shift coefficient to obtain an optimal reference voltage. A non-peak point of the resonance spectral line of the atomic clock is locked, so that the variation in the offset frequency shift caused by power variation of an optical signal output by the laser can compensate for the variation in the locking frequency of the laser caused by the power variation, thereby reducing the frequency shift coefficient caused by the power variation. The method is simple to operate and has universality.

Method for compensating for frequency shifts caused by variations in environmental parameter of atomic clock

The present application discloses a control method for fast trapping and high-frequency mutual ejection of cold atom groups. The control method includes: arranging three groups of optical stops on three groups of light sources (splitters) in three-dimensional magneto-optical traps, to form a shaded regions; ejecting a cold atom group from the first three-dimensional magneto-optical trap along a movement trajectory to the second three-dimensional magneto-optical trap, where the movement trajectory passes through the shaded regions of the two three-dimensional magneto-optical traps; and, when it is determined that the cold atom group enters the shaded region of the first three-dimensional magneto-optical trap, trapping a next cold atom group by turning on three-dimensional cooling light and three-dimensional repumping light in the first three-dimensional magneto-optical trap.

Control method for fast trapping and high-frequency mutual ejection of cold atom groups

Growing community of inventors

Wuhan, China

Kangqi Liu