Strontium Atomic Lack-In System Of Miniaturized And Preparation Of A Permanent Zeem Slower

In pace with the development of the laser cooling technique,super narrow line-width lasers and femtosecond optical frequency combs,Optical lattice clock have achieved its accuracy and stability with 10-18.Optical lattice Clock employ various atomic species and reference transitions.Among these clocks,the(5s2)1S0-(5s5p)3P0 transition of fermion 87 Sr is used as an optical reference and is investigated to our knowledge worldwide.The best clock is 87 Sr optical lattice clock until now,and we study it in National Time Service Center.Taking the performance advantage of strontium optical lattice clock,it is expected to become a new generation time benchmark definition.National time service center began to invest in the developing of strontium atoms in an optical lattice clock in 2007,this paper mainly focuses on the miniaturization of strontium optical lattice clock,including miniaturization of strontium atomic beam system and its performance evaluation.The development of space optical lattice clock can greatly improve the crack of existing global positioning system.The most important thing of the development of space optical lattice clock is the small and light of the clock,so it is necessary for the strontium optical lattice clock.This paper mainly studies the physical vacuum system miniaturization of the strontium optical lattice clock,the strontium atomic oven,Zeeman slower and in charge of magneto optical trap cavity miniaturization development.The strontium optical lattice clock main vacuum system was miniaturized from the original 180 cm to 90 cm,magneto-optical trap cavity diameter from 50 cm reduced to 12 cm,atomic beam system used for stabilize the 461 nm laser from the original 85 cm to small 45 cm.The atomic flux method using laser induced fluorescence experiments on miniaturized strontium atomic beam system are measured,the miniaturization of strontium atomic beam dipole transition and inter combination fluorescence line width was measured,in order to estimate the atomic beam divergence angle.The experiment result of the relationship between laser scanning frequency and line width of the theoretical analysis is consistent with the experimental value.At the end,the permanent magnet device for thermal atomic Zeeman deceleration influence the velocity distribution has been measured.