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

A plane grating and incident light technology, applied in the field of magneto-optical traps, can solve the problems of complex system structure, difficult miniaturization, and mutual interference of fluctuations, and achieve simple system alignment, reduced intensity imbalance, and stable system configuration. Effect

Pending Publication Date: 2022-01-21
HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)
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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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  • Plane grating and single-beam incident three-dimensional magneto-optical trap system

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[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0019] like figure 1 As shown, it is a basic example of a planar grating for a three-dimensional magneto-optical trap system for single-beam light incident in the present invention, including three grating areas with different etching directions, etching area one, etching area two and etching area two. In area three, three direction gratings form a triangular array, and the angle between any two is 60°. The central wavelength range of incident light corresponding to the grating is 780nm±200nm.

[0020] In the three-dimensional magneto-optical trap, three first-order diffracted beams diffracted toward the center are used to trap atoms. In order to concentrate energy on the first-order diffracted beams, it is necessa...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/18G21K1/00G21K1/093
CPCG02B5/18G02B5/1857G21K1/006G21K1/093
Inventor 杨晓燕王密信郭强王晨晟操琼
Owner HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)
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