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A Method of Improving the Stability of Laser Output

A stability and laser technology, applied in lasers, laser components, optics, etc., can solve the problems of stability or phase mismatch that cannot significantly improve the stability of laser output, and achieve the effect of improving stability

Active Publication Date: 2016-10-05
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single solution to the stability or phase mismatch of the incident laser cannot significantly improve the laser output stability

Method used

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  • A Method of Improving the Stability of Laser Output

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Embodiment 1

[0021] like figure 1 As shown, a device for improving laser output stability includes lasers 1, 2, modulators 3, 4, mirrors 5, 6, nonlinear crystal 7, temperature control device 8, controllers 9, 10, beam splitting prism 11, Linear polarizers 12, 13, beam splitters 14, 15, feedback devices 16, 17, light collectors 18, 19. In this embodiment, the two incident lights undergo a parametric conversion process in a collinear phase matching manner. The outgoing laser light of the lasers 1 and 2 is used as the incident light through the modulators 3 and 4, and is adjusted to a collinear optical path by the mirrors 5 and 6. The two incident lights are incident on the nonlinear crystal 7, and the temperature control device 8 can ensure that the nonlinear crystal 7. At a constant temperature, after the three-wave interaction parametric process, the three lights are emitted at the same time, and the beam splitting prism 11 separates the three beams of light in space. At this time, the tw...

Embodiment 2

[0028] On the basis of the above embodiments, further, a device for improving laser output stability, which includes an incident laser unit, a laser power stabilization system, a nonlinear crystal unit, and a light splitting unit; the incident laser unit includes at least one laser , the incident nonlinear crystal participates in the parameter conversion process; the laser power stabilization system is used to ensure the power stability of the incident laser; the nonlinear crystal unit is used for the parameter conversion process and is placed inside the laser power stabilization system; The unit is used to realize laser beam splitting.

[0029] The laser power stabilization system includes a modulator, a controller and a photoelectric detection feedback device. The photoelectric detection feedback device detects the power fluctuation of the incident light and transmits the signal to the controller. Under the action of the controller, the modulator performs power compensation f...

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Abstract

The invention provides a device and a method for improving the stability of laser output. The device comprises an incidence laser unit, a laser power stabilization system, a nonlinear crystal unit and a light splitting unit. The incidence laser unit carries out laser incidence on a nonlinear crystal. The laser power stabilization system is used for stabilizing an incidence laser. The nonlinear crystal unit comprises the nonlinear crystal and a temperature control device, and is placed in the laser power stabilization system. The nonlinear crystal is used for a parameter conversion process. The temperature control device can carry on precise control on the temperature of the nonlinear crystal. The light splitting unit comprises a light splitter prism, a light splitter film and a light collector. According to the invention, through feedback control on an incidence light, the laser produced by the parameter conversion process is stabilized.

Description

technical field [0001] The invention belongs to the technical field of laser output, and in particular relates to a device and method for improving the stability of laser output. Background technique [0002] With the continuous maturity and breakthrough of nonlinear optical technology, laser frequency conversion technology has made great progress, which has also greatly promoted the development of lasers. Laser power output stability is an important indicator of lasers. Lasers with high stability are widely used in laser micromachining, laser medical treatment, optical radiation measurement and laser military applications. [0003] There are many factors affecting the power stability of a laser with a specific wavelength based on a nonlinear parametric conversion process, among which the stability of the incident laser and the thermally induced phase mismatch of the nonlinear crystal are the two most important factors. A single solution to the stability of the incident las...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/13G02B27/10G02B27/28
Inventor 刘长明史学舜杨乐臣刘玉龙赵坤周茜
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP