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Automatic laser frequency stabilization system based on intelligent saturated absorption spectrum recognition technology

A technology of intelligent identification and absorption spectrum, which is applied to lasers, laser components, phonon exciters, etc., can solve problems such as limiting the application scenarios of laser closed-loop frequency stabilization systems, and achieve powerful functions, accurate and fast identification and adjustment, and robust strong effect

Active Publication Date: 2019-02-01
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

This kind of phenomenon seriously limits the application scenarios of the laser closed-loop frequency stabilization system, such as long-term, complex field environment, unattended, spaceborne and other experiments

Method used

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  • Automatic laser frequency stabilization system based on intelligent saturated absorption spectrum recognition technology
  • Automatic laser frequency stabilization system based on intelligent saturated absorption spectrum recognition technology
  • Automatic laser frequency stabilization system based on intelligent saturated absorption spectrum recognition technology

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present invention will be further described in detail below in conjunction with specific embodiments and according to the accompanying drawings. It should be noted that, in the drawings or descriptions in the specification, the content not described and some English abbreviations are the content well known to those of ordinary skill in the art. Some specific parameters given in this embodiment are only for demonstration, and the values ​​may be correspondingly changed to appropriate values ​​in different real-time manners.

[0040] refer to figure 2 , in this embodiment, the laser is a 780nm external-cavity semiconductor laser, and the output laser is divided into three beams by two beam splitters, wherein the high-power split beam is used as the output of the frequency stabilization system, and the two low-power split beams are respectively used For frequency discr...

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Abstract

The invention provides an automatic laser frequency stabilization system based on the intelligent saturated absorption spectrum recognition technology. The automatic laser frequency stabilization system comprises a laser closed loop locking loop and an automatic relocking loop. The closed-loop locking loop includes an atomic absorption chamber, a saturated-absorption-spectrum-based frequency discriminator and a feedback controller to realize closed-loop locking of the laser frequency. The automatic relocking loop works based on combination of the pattern recognition technology in artificial intelligence with the classical photoelectric technology, thereby regulating the working state of the laser device automatically and accurately and searching for a locking point in the saturated absorption spectrum. When the laser frequency is in a locking state, the laser closed loop locking loop continuous working to realize locking of the laser frequency; and when the laser frequency is in an unlocked state, the relocking loop locks the laser frequency again by a series of automatic operations. Therefore, one-key automatic locking and automatic relocking after lock losing of the laser frequency are realized. The automatic laser frequency stabilization system has characteristics of powerful function, high intelligence, strong robustness and high applicability and can be applied to the laser frequency stabilization field.

Description

technical field [0001] The invention relates to the field of laser frequency stabilization, in particular to a laser automatic frequency stabilization system based on the intelligent identification technology of saturated absorption spectrum. Background technique [0002] The birth of lasers has promoted a series of scientific and technological progress. In order to obtain a laser that meets the requirements, that is, the laser has a narrow linewidth and high frequency stability, researchers have studied a laser closed-loop frequency stabilization system. A typical laser closed-loop frequency stabilization system consists of three parts: a reference frequency, a frequency discriminator, and a feedback controller. Widely used reference frequencies are the transition frequencies of atoms or molecules and the characteristic frequencies of optical resonant cavities. The main difference is the different frequency discrimination method. The transition frequency of atomic molecu...

Claims

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Application Information

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IPC IPC(8): H01S3/137H01S3/098
CPCH01S3/1115H01S3/137
Inventor 颜树华李期学杨俊朱凌晓贾爱爱王亚宁张旭王恩龙章欢开
Owner NAT UNIV OF DEFENSE TECH
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