2 dimensional magneto-optical trap apparatus

Abstract

The invention belongs to the atom cooling technologies, and discloses a 2 dimensional magneto-optical trap apparatus which is reduced in size and mains high-velocity stream for a 3 dimensional magneto-optical trap. The invention provides a 2 dimensional magneto-optical trap apparatus which includes a vacuum cavity having an atom source, a first laser alignment beam expanding system which is intended for generating a cooling beam, a first reflector, a second laser alignment system which is intended for generating another cooling beam, a second reflector, two pairs of anti-Helmholtz coils which are intended for generating a magnetic field. The incoming direction of the cooling beam is tilted at a certain angle with respect to the long shaft direction off the vacuum cavity, such that the cooling beam generates a light intensity component in the long shaft direction of the vacuum cavity. The light intensity component serves as effective pushing light. And a cooling sub-beam having high flux is obtained without an extra pushing light. According to the invention, the 2 dimensional magneto-optical trap apparatus can obtain the cooling sub-beam which meets requirements for low longitudinal speed, narrow distribution of longitudinal speed and large flux of atoms, has a simple structure and small size, and realizes reduction in sizes of the magneto-optical trap atom cooling systems.

Description

technical field [0001] The invention belongs to atom cooling technology, and in particular relates to a two-dimensional magneto-optical trap device that provides a miniaturized, continuous high-speed flow for a three-dimensional magneto-optic trap. Background technique [0002] With the development of laser cooling technology, especially the emergence and maturity of laser cooling atom technology, the temperature of atoms can be reduced to the order of μK or even nK, the coherence of atoms is greatly improved, and the research and application of cold atoms has become a hot spot. Significant progress has also been made in research on atomic inertial devices such as cold atomic gyroscopes, atomic accelerometers, atomic gravimeters, and atomic fountains. As the carrier of these studies, cold atom sources with narrow velocity distribution, small divergence angle, and high flux have become the focus of research. [0003] The preparation technology of the cold atom source usually...

AI Technical Summary

Problems solved by technology

The optical path of this scheme is relatively complicated, the space size is large, and the optical power loss is relatively large due to the use of too many optical devices, and the requirements for laser power are relatively high, so it is not suitable for miniaturization and engineering applications.

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