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Zeeman dual frequency laser

A Zeeman dual-frequency and laser technology, applied in the laser field, can solve the problem of low frequency difference of dual-frequency lasers, and achieve the effect of improving frequency difference index, improving frequency difference performance and high mechanical strength

Active Publication Date: 2017-05-31
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Abstract
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Problems solved by technology

[0005] The invention provides a Zeeman dual-frequency laser to overcome the problem of low frequency difference of dual-frequency lasers in the prior art

Method used

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Embodiment Construction

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present invention are in simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0025] Please refer to figure 2 , Figure 4 , and combined with Figure 5 , the present invention provides a Zeeman dual-frequency laser 1 , including a laser tube 11 , a beam splitter 2 , a detector 3 , a comparator 4 and a controller 5 . Wherein, the detector 3 includes a first detector 31 and a second detector 32, and the two ends of the first detector 31 and the second detector 32 are respectively connected with one end of the beam splitting prism 2 and the comparator 4 , the other end of the co...

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Abstract

The invention discloses a Zeeman double-frequency laser which comprises a laser tube, a beam splitter prism, a detector, a comparator and a controller. The detector comprises a first detector body and a second detector body. One end of the first detector body and one end of the second detector body are respectively connected with the beam splitter prism and the other end of the first detector body and the other end of the second detector body are respectively connected with one end of the comparator. The other end of the comparator is connected with the controller. The Zeeman double-frequency laser further comprises a heater strip and a magnetic ring set. The heater strip is tightly wound around the tube wall of the laser tube and connected with the controller. The magnetic ring set comprises first magnetic rings and second magnetic rings, wherein the first magnetic rings and the second magnetic rings are arranged on the laser tube in a surrounding mode. The magnetic energy product of the first magnetic rings and the magnetic energy product of the second magnetic rings are different and the corresponding second magnetic rings are symmetrically and evenly distributed at the two ends of each first magnetic ring. According to the Zeeman double-frequency laser, under the condition that the performance of the laser tube is kept unchanged, the frequency difference index of the double-frequency laser can be increased to a great extent.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a Zeeman dual-frequency laser. Background technique [0002] The dual-frequency laser interferometry system has the characteristics of high resolution, high speed and low noise, so it is widely used in the field of high precision measurement. The dual-frequency laser interferometry system consists of a dual-frequency laser, a dual-frequency laser interferometer and a data processing unit. The orthogonally polarized laser beam, the dual-frequency laser interferometer converts the displacement information of the target into an optical interference signal, and the interference signal is processed by the data processing unit to obtain the displacement information of the target. According to the principle of dual-frequency laser interferometry, there is an upper limit for the moving speed of the target. When the moving speed of the target is greater than the upper limit, the dual-frequency lase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08H01S3/03
Inventor 吴萍张志平
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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