Plane grating and single-beam incident three-dimensional magneto-optical trap system

Abstract

The invention relates to a plane grating and a single-beam incident three-dimensional magneto-optical trap system comprising the plane grating, the plane grating comprises three regions with different etching directions: an etching region I, an etching region II and an etching region III, and the grating structure parameters of the etching region I, the etching region II and the etching region III are completely consistent. The grating etching directions of the three etching areas form a triangular array, and the included angle between every two etching areas is 60 degrees. The invention can solve the problems that an existing magneto-optical trap system adopts six beams of laser to perform two-to-two correlation, fluctuation mutual interference exists among the six beams of laser, the system structure is complex, miniaturization is difficult and the like, and the invention can be applied to quantum precision measurement systems such as small-sized atom interference gyroscopes and gravimeters and future integrated atom chip systems.

Description

technical field [0001] The invention relates to the technical field of magneto-optical traps, in particular to a plane grating for a three-dimensional magneto-optic trap system where a single beam of light is incident, and a three-dimensional magneto-optic trap system including the plane grating. Background technique [0002] The three-dimensional magneto-optical trap is the basic means to realize the cooling and trapping of atoms, and is an essential unit of the cold atom interference system. The existing three-dimensional magneto-optical trap structure requires six laser beams to pass through the optical window for three-dimensional optical input, and to ensure the effect of two-two beams and three-axis orthogonality. The structure is complex and difficult to miniaturize, which limits its application in integrated atomic chips. (The chip hinders the three-dimensional optical path in space), so a new design and structure of the magneto-optical trap needs to be proposed. C...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems in the prior art, the present invention provides a planar grating for a three-dimensional magneto-optical trap system where a single beam of light is incident and a three-dimensional magneto-optical trap system containing the planar grating, so as to solve the problems of the existing magneto-optic trap system Using six laser beams for two-to-two shooting, there are problems such as fluctuations and mutual interference between the six beams, complex system structure, and difficulty in miniaturization. Quantum precision measurement systems such as small atomic interference gyroscopes and gravimeters and future integrated atomic chip systems can be applied. middle

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