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Single-tube semiconductor laser combining structure

A technology of lasers and semiconductors, applied in the direction of devices, optics, instruments, etc. to control the output parameters of lasers, to achieve the effect of increasing output power

Inactive Publication Date: 2013-01-30
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the limitation of the number of beam-combining units by the polarization beam-combining method in the existing single-tube beam-combining technology, and provides a single-tube semiconductor laser beam-combining structure without limitation on the number of beam-combining units

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Embodiment Construction

[0024] The inventive idea of ​​the present invention is: a single-tube semiconductor laser beam combining structure, including a plurality of single-tube semiconductor lasers of the same wavelength; each of the single-tube semiconductor lasers is fixed on a transitional heat sink, and the transitional heat sink is fixed on On the stepped heat sink; multiple stepped heat sinks are arranged in an arc in the same plane, and multiple single-tube semiconductor lasers fixed on each stepped heat sink can emit a combined beam with the same direction; multiple combined beams are incident through different inclinations On the diffraction grating, the light spots overlap on the diffraction grating. Under the light splitting effect of the diffraction grating and the feedback of the external cavity mirror, the beam emitted by each single-tube semiconductor laser is formed by the rear cavity surface of the laser and the external cavity mirror. The external cavity feedback and wavelength lock...

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Abstract

The invention relates to a single-tube semiconductor laser combining structure, comprising multiple single-tube semiconductor lasers with the same wavelength and multiple stepped heat sinks, wherein the multiple stepped heat sinks are in arc-shaped arrangement in the same plane, and multiple lasers fixedly arranged on each stepped heat sink can emit a column of combined light beams in the same direction; multiple columns of combined light beams are incident on a diffraction grating via different dip angles and superpose on the diffraction grating, under the beam split effect of the diffraction grating and the feedback effect of an external cavity mirror, the light beam emitted by each laser realizes external cavity feedback and wavelength locking in a resonant cavity constituted by the rear cavity surface of the laser and the external cavity mirror, the multiple paths of light beams are combined into one beam by the diffraction grating, so that the external cavity combination is realized, and the light beam is finally coupled in a multimode fiber. According to the single-tube semiconductor laser combining structure, the limitation on the number of combining units of conventional spatial combination and polarization combination is broken through, the number of the combining units is remarkably increased, after the combined beam is coupled in the multimode fiber, the output power is greatly higher than the output power of a fiber coupling module manufactured by the spatial combination and polarization combination technology.

Description

technical field [0001] The invention relates to the technical field of semiconductor lasers, in particular to a beam combining structure of a single-tube semiconductor laser. Background technique [0002] Because the single-tube semiconductor laser has the advantages of high beam quality, good heat dissipation, and long life, the fiber-coupled module made of single-tube beam combining technology has great advantages in laser medical treatment, fiber laser pumping, laser monitoring, and laser processing. Wide range of applications. However, due to the low power output of single-tube semiconductor lasers, in order to increase the output power of fiber-coupled modules to meet the application of single-tube semiconductor laser technology, some research institutions have adopted some single-tube beam combining technologies, such as (100-W, 105- μm, 0.15NA Fiber Coupled Laser Diode Module, Scott R. Karlsen, R. Kirk Price, Proc. of SPIE Vol. 7198 71980T-1), which is the main techn...

Claims

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Application Information

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IPC IPC(8): H01S5/06G02B27/10
Inventor 朱洪波郝明明秦莉张志军王立军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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