High-power 885 nm laser diode side pump Nd:YAG laser module

A laser diode and laser module technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of low pump light absorption efficiency, increase laser rods, etc., achieve high laser output and increase doping concentration , the effect of high electro-optical efficiency

Inactive Publication Date: 2015-03-25
JIANGSU ZHONGKESIXIANG LASER TECH
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Problems solved by technology

It has been reported that high-power and high-efficiency 1064nm laser output was obtained by using an 885nm laser diode end-pumped Nd:YAG laser rod (R. Lavi, S. Jackel, A. Tal, E. Lebiush, Y. Tzuk, S. Goldring, Opt. Commun., 195, 5–6, 427–430 (2001); Maik Frede, Ralf Wilhelm, and Dietmar Kracht, Opt. Lett. 31, 3618-3619 (2006); Fang-Qin, Li, et al. Chinese Physics Letters 26.11, 114206(2009)), but because the absorption coefficient of Nd:YAG laser crystal at 885nm is smaller than that at 808, the end pumping structure can increase the length of the laser rod, and the side pumping needs to solve the pumping light absorption efficiency low puzzle

Method used

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  • High-power 885 nm laser diode side pump Nd:YAG laser module
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  • High-power 885 nm laser diode side pump Nd:YAG laser module

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Embodiment Construction

[0021] Depend on figure 1 , figure 2 It is known that a high-power 885nm laser diode side-pump Nd:YAG laser module includes a glass tube 1, a Nd:YAG laser rod 2 installed in the glass tube 1, and the arrangement of equal parts along the circumference of the glass tube is useful for pumping The laser diode line array 3 and the reflector 4 of the Nd:YAG laser bar 2 form a laser module 9 .

[0022] Depend on image 3 It is a schematic diagram of the package of the laser module of the present invention. The laser module 9 is packaged by the fixing plates 5 at both ends, the upper module shell 6 and the bottom module bottom plate 7 . The glass tube 1, the Nd:YAG laser rod 2 combined with the O-shaped rubber ring and the module end face fixing plate 5 form a water-tight structure. The laser module 9 has a dust-tight structure formed by the module end surface fixing plate 5 , the module casing 6 and the module bottom plate 7 .

[0023] In this embodiment, the glass tube 1 has a...

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Abstract

A high-power 885 nm laser diode side pump Nd:YAG laser module comprises a glass tube (1), an Nd:YAG laser rod (2), a laser diode linear array (3) and a reflecting mirror (4), wherein the Nd:YAG laser rod (2) is installed in the glass tube; the laser diode linear array (3) is used for the Nd:YAG laser rod (2) and arranged along the circumference of the glass tube in an equally divided mode. A laser module body (9) is encapsulated by fixing plates (5) at the two sides, a module shell (6) at the upper portion and a module base plate (7) at the bottom. According to the laser module, the 885 nm semiconductor laser diode linear array pumping Nd:YAG crystal rod is adopted, compared with an 808 nm pumping laser module, the thermal load is effectively reduced nearly by 30%, and therefore the thermo-optic effect of the laser module is effectively reduced; pumping light is effectively absorbed in a double-passage mode, and the dosage concentration of the Nd:YAG laser rod is increased, so that laser output of high power and high electro-optic efficiency is achieved.

Description

technical field [0001] The invention relates to a high-power 885nm laser diode side-pumped Nd:YAG laser module, which belongs to the technical field of solid lasers, specifically the field of laser modules. Background technique [0002] At present, high-power all-solid-state lasers used in industrial processing are generally composed of several laser modules in series, and high-power output is achieved through resonance or resonance amplification, which has the advantages of simple structure and easy implementation. Processing equipment based on this type of laser is widely used in the fields of automobiles, railways, ships, metallurgy, petrochemicals, national defense, and aerospace. The laser module is usually an integration of the pump source (laser diode) and the working substance (crystal rod), which is the core component of the laser. However, the high power and high beam quality output of the laser is limited by the thermo-optic effect, although the thermo-optic effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/16
Inventor 董智勇赵鹏飞丁大伟林学春林培晨
Owner JIANGSU ZHONGKESIXIANG LASER TECH
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