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Display method of converting infrared laser path into visible light

An infrared laser and display method technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of poor measurement accuracy and troublesome operation, and achieve accurate positioning, high luminous efficiency, and high laser damage resistance threshold Effect

Inactive Publication Date: 2007-01-03
BEIJING UNIV OF TECH
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Problems solved by technology

[0008] Disadvantages: Since the inclined plate requires high machining accuracy, it is required to achieve the corresponding dimensional accuracy, and it is a non-standard part
[0012] Disadvantages: Frequent replacement of metal sheets is required, which is troublesome to operate
And because the laser beam is not a continuous beam, the measurement accuracy is poor

Method used

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  • Display method of converting infrared laser path into visible light
  • Display method of converting infrared laser path into visible light
  • Display method of converting infrared laser path into visible light

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Experimental program
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Embodiment Construction

[0034] 1.Tm 3+ :ZnWO 4 Crystal preparation

[0035] Growth of Tm in resistance furnace heated by SiC rods under atmospheric atmosphere by pulling method 3+ :ZnWO 4 crystals. First ZnO, WO 3 and Tm 2 o 3 Powder is weighed by 1: 1 molar ratio, Tm in the present invention 3+ The ion doping concentration is 0.1 mol% to 2.0 mol%. Mix the raw materials evenly, put them into a platinum crucible, and the purity of the raw materials is 4N. Put the crucible into a resistance furnace, raise the temperature to 1205°C, place the seed crystal after the material is completely melted, and grow Tm through the processes of necking, shoulder expansion, equal diameter, and finishing. 3+ :ZnWO 4 crystals. The process conditions are: axial temperature gradient ΔG≥30°C / cm, crystal rotation speed 15-40r.p.m., and pulling speed≤4mm / h.

[0036] 2. Subsequent processing of crystals

[0037] Put the crystal into an annealing furnace, heat it to 1100°C, keep it warm for 3 hours, and then drop...

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Abstract

The present invention belongs to the field of laser machining technology, and is especially one display method of converting infrared laser beam into visible light. One kind of up-converting RE doped crystal is grown in proper growth process, and after annealing, orientating, cutting and surface polishing, the up-converting RE doped crystal is set on operating platform to convert infrared laser beam of 0.8-1.06 micron wavelength into blue beam with one narrowest part to define the position of the focus. The method of the present invention is superior to available inclined plate method and vertically elevating method, and has the advantages of being intuitive, efficiency, reliable and economic. The method may be used in infrared path display and focus measurement as well as laser medicine and other fields needing precise observation of laser beam path and precise determination of laser focus.

Description

technical field [0001] The invention discloses a display method for converting infrared laser path into visible light, belongs to the field of laser processing, and is a practical method for displaying infrared light path and adjusting focus in laser processing. Background technique [0002] The laser beam has a series of advantages such as good monochromaticity, high energy density, good space control and time control, and its application has rapidly spread to many fields of society. As an important application direction of laser, laser processing has developed rapidly under the strong support of other high-tech development and the strong demand of rapid social development. It has been used in automobile manufacturing, aerospace, electronics, chemical industry, packaging and medical equipment industries be widely used. [0003] Most of the emission wavelengths of lasers used in laser processing are in the infrared region. For example, the emission wavelength of solid-state...

Claims

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Application Information

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IPC IPC(8): B23K26/04B23K26/06B23K26/70
Inventor 臧竞存谢丽艳聂京凯肖伟民徐东勇陈继民
Owner BEIJING UNIV OF TECH
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