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Laser power/ energy adjustment distribution device

A technology of energy adjustment and laser power, applied in the laser field, can solve the problems of high cost, poor adaptability, and large error of plating spectroscopic diaphragms, and achieve the effects of easy engineering promotion, easy installation and debugging, and accurate adjustment and distribution

Inactive Publication Date: 2009-06-10
BEIJING GK LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the disadvantages of high cost, long period, large error and poor adaptability of relying on the coating of spectroscopic film when power or energy distribution is performed in the prior art, so as to provide an adjustment and distribution that can flexibly adjust laser power / energy device

Method used

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  • Laser power/ energy adjustment distribution device
  • Laser power/ energy adjustment distribution device
  • Laser power/ energy adjustment distribution device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment implements 4-way splitting of a beam of laser light, such as figure 1 , is the optical path diagram of the precisely adjustable laser power / energy distributor of this embodiment, where the part in the dotted line box is the laser distribution device 20 of this embodiment, and the device 20 will distribute the power of the laser light emitted by the laser 1 . In this embodiment, five 1 / 2 wave plates and five polarizers are included, which are respectively the first 1 / 2 wave plate 2, the second 1 / 2 wave plate 4, the third 1 / 2 wave plate 6, and the fourth 1 / 2 wave plate 8, the fifth 1 / 2 wave plate 10, the first polarizer 3, the second polarizer 5, the third polarizer 7, the fourth polarizer 9, the fifth polarizer 11, the polarizers are all horizontal The polarizations are arranged, and the included angle with the laser optical axis is Brewster's angle, and the 1 / 2 wave plates are perpendicular to the optical axis.

[0029] If the laser light output by the...

Embodiment 2

[0032] Such as figure 2 As shown, the output laser light of laser 1 is linearly polarized, and in this embodiment, the figure 1 The first 1 / 2 wave plate 2 and the first polarizer 3 are removed, and the output power or energy I of the laser 1 is first measured 0 , and then adjust each wave plate by the same method as in Example 1 to achieve the spectroscopic purpose.

Embodiment 3

[0034] Such as image 3 As shown, the output laser light of laser 1 is elliptically polarized, and the elliptical eccentricity e is relatively small (such as e=0~0.5), and when it is close to circular polarization, the first 1 / 2 wave in embodiment 1 is used in this embodiment Plate 2 is changed into 1 / 4 wave plate 12, and then each wave plate is adjusted by the same method as embodiment 1; If laser 1 output laser is elliptically polarized, and ellipse eccentricity e is bigger (as e=0.5~1 ), when close to linear polarization, keep the first 1 / 2 wave plate 2 in embodiment 1 unchanged, and adjust each wave plate with reference to embodiment 1.

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Abstract

The invention discloses a device for adjusting and distributing the power or energy of output laser of laser device, wherein the device comprises at least two 1 / 2 wave plates as a first 1 / 2 wave plate and a second 1 / 2 wave plate, at least two polarizing discs as a first polarizing disc and a second polarizing disc, wherein the wave plates and the polarizing discs are in same number which are on same optical path, the first 1 / 2 wave plate, the first polarizing disc, the second 1 / 2 wave plate and the second polarizing disc are arranged on one optical path in turn, while the left 1 / 2 wave plats and polarizing discs are arranged on the optical path in turn. All polarizing discs are arranged in Brewster's angle with the optical path. The invention has the advantages in simple operation, flexible adjustment and accurate distribution.

Description

technical field [0001] The invention relates to laser technology, in particular to a device for adjusting and distributing power or energy output by a laser. Background technique [0002] With the rapid development of laser technology, laser technology plays an increasingly important role in various fields, from military to civilian, from scientific research to teaching, from industry to agricultural and sideline industries and many other fields. At the same time, various applications are increasingly using the redistribution of laser output energy, such as multi-beam shooting, laser show and other very representative situations that require the distribution or adjustment of laser power or energy. In engineering applications, the requirements for reliability, engineering, stability, assemblability, and operability of laser energy / power distribution or adjustment schemes are getting higher and higher. [0003] In the prior art, the distribution of laser output power / energy i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
Inventor 崔建丰樊仲维裴博薛岩
Owner BEIJING GK LASER TECH