Device for improving output frequency stability of laser and laser with device

Abstract

The invention discloses a device for improving the output frequency stability of a laser and the laser with the device, which belong to the technical field of lasers. The device comprises a first absorption chamber, a frequency modulation module, a second absorption chamber, a first photoelectric detection module, a first servo module and a piezoelectric crystal driver, wherein the first absorption chamber is used for selecting laser signals with preset frequency from laser beams of the laser; the frequency modulation module is used for performing low-frequency modulation on the laser signals selected from the first absorption chamber; the second absorption chamber is used for selecting laser signals with preset frequency from the modulated laser signals; the first photoelectric detection module is used for detecting the intensity of the laser signals selected by the second absorption chamber and outputting a first photoelectric detection signal; the first servo module is used for outputting a first correction voltage according to the difference between the first photoelectric detection signal and the preset signal; and the piezoelectric crystal driver is used for adjusting the frequency of the laser beams according to the first correction voltage. The laser comprises a laser tube and the device. The device disclosed by the invention can be used for improving the output frequency stability of the laser.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a device for improving the output frequency stability of a laser and a laser with the device. Background technique [0002] A laser is a device that uses the principle of stimulated radiation to amplify or oscillate light in certain excited substances. Due to the small laser beam, good directionality, and huge power, lasers are widely used in industry, agriculture, precision measurement and detection, communication and information processing, medical treatment, military affairs, etc. [0003] As the application range of lasers becomes wider and wider, the requirements for the stability of the output frequency of lasers are getting higher and higher. The prior art provides a device for improving the output stability of a laser. The device includes heat sink, temperature controller and observation module. The heat sink supports the laser gain medium placed in the laser and is in ...

AI Technical Summary

Problems solved by technology

[0005] The laser itself has a certain accuracy limitation on the ambient temperature of the laser gain medium. The existing technology controls the temperature of the laser gain medium to improve the output stability of the laser only within a certain range of accuracy.

For high-precision equipment such as gravity gradiometers that require high frequency stability and accuracy of lasers, the existing technology cannot meet the requirements for high-precision laser frequency stabilization

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