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Method for eliminating spatial hole-burning effect through driving solid laser gain medium

A solid-state laser, gain medium technology, applied in excitation methods/devices, laser parts and other directions, can solve problems such as adjustment difficulties, achieve the effects of simple and effective methods, elimination of multi-mode competition, and improved output performance

Inactive Publication Date: 2011-11-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has good output stability and is less affected by the outside world, but it will generate multiple transverse modes under high-power pumping, and it is difficult to adjust

Method used

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  • Method for eliminating spatial hole-burning effect through driving solid laser gain medium
  • Method for eliminating spatial hole-burning effect through driving solid laser gain medium
  • Method for eliminating spatial hole-burning effect through driving solid laser gain medium

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: (device embodiment)

[0026] Such as figure 1 As shown, a device for eliminating the spatial hole-burning effect by driving the gain medium of the solid-state laser comprises a solid-state laser, piezoelectric ceramics 3 and a drive circuit 4, and is characterized in that the piezoelectric ceramics 4 are strip-shaped and fixed at the solid-state laser gain On the base 2 under the medium 1, the axial direction of the piezoelectric ceramic 3 is consistent with the axial direction of the gain medium 1; the driving circuit 4 is a circuit for generating a triangular wave signal, and its signal output terminal is connected to the piezoelectric ceramic 4 through a wire 5, because The inverse piezoelectric effect of the piezoelectric ceramic 4 is the electrostrictive effect. The axial expansion and contraction of the piezoelectric ceramic 4 causes the gain medium 1 of the solid-state laser to produce a λ / 4 displacement along the axial direction, so that the gain ...

Embodiment 2

[0030] Embodiment 2: (method embodiment)

[0031] A method for eliminating the spatial hole-burning effect of a solid-state laser by using the above-mentioned device, the steps are as follows:

[0032] 1. Turn on the power of the solid-state laser to make it work normally; place the laser power measurement device at the output end of the solid-state laser for power measurement;

[0033] 2. Connect the triangular wave signal output terminal of the driving circuit 4 to the piezoelectric ceramic 3 through the wire 5, and turn on the power supply of the driving circuit 4, so that the driving circuit 4 generates a stable triangular wave signal;

[0034] 3. Adjust the frequency of the drive circuit 4, and observe whether there is a change in the output power by the laser power measuring device. If there is no power change, slowly increase the voltage value of the drive circuit 4, and then adjust the frequency of the drive circuit 4. When the laser power When the measurement device ...

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Abstract

The invention discloses a method for eliminating spatial hole-burning effect through driving solid laser gain medium, belonging to the technical filed of solid lasers. The devices used by the method comprise a solid laser, long-strip piezoelectric ceramics and a drive circuit, and are characterized in that the piezoelectric ceramics is fixed on the base below the solid laser gain medium; the axial direction is consistent to that of the gain medium; the drive circuit can generate triangular wave signals, the signal output end of the drive circuit is connected with the piezoelectric ceramics through wires, due to the inverse piezoelectric effect and electrostrictive effect of the piezoelectric ceramics, the piezoelectric ceramics flexes axially to cause the laser gain beam of the solid laser to displace lambda / 4 to effectively use the gain medium of the solid laser gain medium, thus eliminating the spatial hole-burning effect of the solid laser and effectively eliminating multi-mode competition to achieve single-frequency output of the laser. The method is simple and effective and the cost is low.

Description

technical field [0001] The invention relates to a method for eliminating the spatial hole-burning effect of a solid-state laser. Specifically, the gain medium of the solid-state laser is fixed on a piezoelectric ceramic, and the gain medium is displaced in the axial direction by driving the piezoelectric ceramic to eliminate the laser working condition. Spatial hole burning in matter. Background technique [0002] For a common standing wave cavity laser, the longitudinal mode oscillating in the cavity has a completely definite standing wave pattern in space, and the light intensity is not uniformly distributed along the cavity axis, so as the inversion particle at each point on the cavity axis The number is different, the gain is also different. After a certain longitudinal mode reaches the threshold and starts to oscillate, as the excitation increases, the number of reversed particles at the antinode of the standing wave is consumed by the longitudinal mode, and its value ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/02H01S3/09
Inventor 王伟杰常军宋复俊孔德龙张燕王宗良
Owner SHANDONG UNIV
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