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Laser device and dehumidification management method for laser device

A laser device and management method technology, applied in the direction of lasers, separation methods, laser components, etc., can solve problems such as unstable laser output, and achieve the effects of preventing condensation, suppressing output fluctuations, and stable performance

Pending Publication Date: 2021-01-26
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when the temperature of the laser device drops below the specified temperature, condensation will occur inside, and the laser light will be absorbed or scattered by the condensation water, resulting in unstable laser output.

Method used

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  • Laser device and dehumidification management method for laser device
  • Laser device and dehumidification management method for laser device
  • Laser device and dehumidification management method for laser device

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Experimental program
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Effect test

no. 1 approach

[0024] [Structure of laser device]

[0025] figure 1 A schematic diagram showing the configuration of a laser device according to the present embodiment, a laser device 100 is composed of a laser oscillator 10 , a dehumidifier 11 , and a control unit 9 .

[0026] The laser oscillator 10 has a laser module 1 , a beam coupler 2 , and a condensing optical unit 3 . The condensing optical unit 3 is connected to an optical fiber 4 and guides laser light LB described later to an unshown laser emitting unit.

[0027] The laser module 1 is composed of a plurality of laser diodes or laser arrays that emit laser beams of different wavelengths, and the laser beams whose wavelengths are synthesized in the laser module 1 are respectively emitted from each laser module 1 . In addition, temperature and humidity sensors THS are respectively provided inside the laser module 1 .

[0028] The beam coupler 2 couples the laser beams respectively emitted from the plurality of laser modules 1 into ...

no. 2 approach

[0083] Figure 5 The relationship between the dew point of the internal atmosphere of the laser oscillator according to this embodiment, the amount of water molecule adsorption, and the laser output is shown, Figure 6 Shows the dehumidification management steps of the laser device.

[0084] As described above, moisture adsorbed inside the laser oscillator 10 absorbs the laser light LB to cause a reduction in laser output.

[0085] On the other hand, water molecules attached to the surface of an object act to suppress static electricity on that surface. Therefore, when the dew point W inside the laser oscillator 10 is at image 3 In the first interval shown, the water molecules adsorbed on the surface of the optical component are below the monomolecular layer, and the surface is in a state where static electricity is easily generated, and fine dust and the like are easily adsorbed.

[0086] When the laser device 100 is a high-power laser device for metal processing, etc., i...

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Abstract

A laser device 100 is provided with a laser oscillator 10, a dehumidifier 11, and a control unit 9 which controls the operation of the dehumidifier 11. The control unit 9 controls the dehumidifier 11so as to make the dew point W in the laser oscillator 10 lower than a first dew point W1H in a state in which water molecules of less than or equal to a single molecule layer are adsorbed therein, orto make the dew point W higher than or equal to a second dew point W2L in a state in which more water molecules than a single molecule layer are adsorbed in the laser oscillator 10 and lower than a third dew point W2H at which dew begins to form in the laser oscillator 10.

Description

technical field [0001] The invention relates to a laser device with a dehumidifier and a dehumidification management method thereof. Background technique [0002] Hitherto, in high-power laser devices, in order to prevent performance degradation due to temperature rise, the internal laser light source and optical components are water-cooled to stabilize the temperature. On the other hand, when the temperature of the laser device falls below a predetermined temperature, dew condensation occurs inside, and the laser light is absorbed or scattered by the dew condensation water, and there is a problem that the laser output becomes unstable. [0003] Then, Patent Document 1 proposes a technique of cooling the optical components inside the laser oscillator and blowing dry air onto the surface of the optical components to prevent dew condensation. [0004] Patent Document 1: Japanese Laid-Open Patent Publication JP-A-04-356981 Contents of the invention [0005] -Technical probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/068H01S3/02H01S5/02218H01S3/00
CPCH01S5/4087H01S5/4012H01S5/02251H01S5/0222H01S5/02407H01S5/06804H01S5/024B01D53/261B01D53/0454B01D2257/80B01D2259/45H01S5/02423H01S5/068
Inventor 龙堂诚西尾正敏王静波
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD