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Multi-wavelength laser beam combination system

A multi-wavelength laser, wavelength technology, applied in lasers, laser devices, laser parts and other directions, can solve problems such as affecting the working state and output power of the laser, and cannot improve the brightness, so as to improve reliability and stability, and enhance operability. sexual effect

Inactive Publication Date: 2016-08-24
WUHU ANRUI LASER TECH CO LTD
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  • Application Information

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Problems solved by technology

The existing beam combining technology has spatial beam combining, but it can only increase the power but not the brightness; polarization beam combining can improve the brightness, but it can only combine two laser beams; wavelength beam combining can improve the power and brightness, but it Provided to each single laser tube by uniform external reflection, the fluctuation of external reflection will directly affect the working state and output power of each single tube laser

Method used

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Embodiment 1

[0018] Depend on figure 1 It is known that it is a schematic diagram of the multi-wavelength laser beam combining system of the present invention. A plurality of tube cores 1 of semiconductor lasers with a nominal center wavelength of 915nm are mounted on a heat sink with microchannel water circulation, and the multiple tube cores are arranged in a straight line. A fast-axis collimating lens 2 is installed on each die to perform fast-axis collimation. Outside the fast axis collimating lens 2, a Bragg volume grating 3 is installed. Along the arrangement direction of the column of dies 1, the central reflection wavelength of the Bragg volume grating 2 is linearly chirped. The distribution range of the wavelength is selected to be 20nm, that is, the center wavelength of the die with the smallest wavelength is 915-10nm, and the center wavelength of the die with the largest wavelength is 915+10nm. Each core wavelength in the middle is selected according to its spatial position a...

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Abstract

The invention discloses a multi-wavelength laser beam combination system, comprising tube cores (1) of a plurality of semiconductor lasers, and a fast axis collimation lens (2), a volume Bragg grating (VBG) (3), a fast-slow axis collimation lens (4), a holographic grating (5) and a beam transforming lens set (6) arranged on an output light path of the semiconductor laser tube cores. The system is characterized in that the fast-slow axis collimation lens (4) is placed on the back of the volume Bragg grating (3), so that laser beams from the semiconductor laser tube cores are diffracted to the same direction on +1-level diffraction fringes to realize semiconductor laser beam combination of the multiple tube cores (1). The beam combination technology improves the wavelength stability of each semiconductor laser tube core, and also improves the working stability of the whole system. The beam combination technology provides a new method and path for realizing a high-brightness and high-power direct semiconductor laser system.

Description

technical field [0001] The invention relates to a beam combining system of multi-wavelength lasers, in particular to a beam combining system of a wavelength-linear semiconductor laser tube core whose frequency is stabilized by a volume Bragg grating. Background technique [0002] With the application of high-power laser technology in industry, medical treatment and national defense, more and more powerful and brighter laser light sources are required. These high-power laser sources include the first-generation carbon dioxide gas laser source, the second-generation solid-state laser source represented by YAG, the third-generation fiber laser source and the fourth-generation direct semiconductor light source. Direct semiconductor needs to combine many semiconductor laser tubes to generate high-power laser. Therefore, semiconductor laser beam combining technology is particularly important. The existing beam combining technology has spatial beam combining, but it can only incr...

Claims

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Application Information

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IPC IPC(8): G02B27/10H01S5/40H01S5/10H01S5/028
CPCG02B27/1006H01S5/028H01S5/10H01S5/40
Inventor 李丰黄伟杨立梅
Owner WUHU ANRUI LASER TECH CO LTD
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