Optical fiber coupling semiconductor laser device

A fiber coupling and semiconductor technology, applied in the laser field, can solve the problems of reducing the coupling efficiency of fiber-coupled semiconductor lasers and limiting the maximum optical power, etc., to achieve the effects of ensuring beam quality, increasing output power, and high transmittance

Inactive Publication Date: 2015-07-08
BWT BEIJING
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  • Abstract
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Problems solved by technology

[0011] For a given CoS, fiber and formula (4) limits the number of CoS that a fiber-coupled semiconductor laser can hold, which is equivalent to limiting the maximum optical power that a fiber-coupled semiconductor laser can output
[0012] At present, for fiber-coupled semiconductor lasers with CoS numbers between N and 2N, if all fiber-coupled semiconductor lasers adopt the form of polarization multiplexing, the coupling efficiency of fiber-coupled semiconductor lasers will inevitably be reduced; Beam quality is poorer than when using polarization multiplexing

Method used

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  • Optical fiber coupling semiconductor laser device
  • Optical fiber coupling semiconductor laser device
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Embodiment 1

[0059] figure 1 is a schematic structural diagram of Embodiment 1 of the present invention, figure 2 Yes figure 2 A view in direction A, image 3 is a schematic diagram of the optical path of Embodiment 1 of the present invention, Figure 4 Yes Figure 4 The enlarged schematic view of the center B, Figure 5 It is a schematic view of the spatial arrangement of the light spots in front of the coupling mirror in Embodiment 1 of the present invention; Figure 1-5 As shown, Embodiment 1 of the present invention discloses a fiber-coupled semiconductor laser, which includes a coupling mirror 200 and a semiconductor laser module capable of outputting multiple beams of P light and at least one beam of S light.

[0060] The coupling mirror 200 is used to couple multiple beams of P light and at least one beam of S light finally output by the semiconductor laser module into one beam to form converged light; the number of beams of P light is greater than the number of beams of S ligh...

Embodiment 2

[0086] Image 6 It is a structural schematic diagram of Embodiment 2 of the present invention, Figure 7 Yes Figure 7 View from direction C in, Figure 8 It is a schematic diagram of the optical path of Embodiment 2 of the present invention, Figure 9 Yes Figure 9 The enlarged schematic view of the part at D in the center, Figure 10 It is a schematic view of the spatial arrangement of light spots in front of the coupling mirror in Embodiment 2 of the present invention. Embodiment 2 of the present invention discloses a fiber-coupled semiconductor laser, which includes a coupling mirror 300 and a semiconductor laser module capable of outputting multiple beams of P light and at least one beam of S light; the coupling mirror 300 is used to couple the semiconductor laser The module finally outputs multiple beams of P light and at least one beam of S light to be coupled into one beam to form a converged light; the number of beams of P light is greater than the number of beam...

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Abstract

The invention relates to the technical field of lasers, in particular to an optical fiber coupling semiconductor laser device. The optical fiber coupling semiconductor laser device comprises a coupling lens and a semiconductor laser device module capable of outputting a plurality of P light beams and at least one S light beam. The coupling lens is used for coupling the multiple P light beams and the at least one S light beam into a beam to form converged light. The number of the P light beams is larger than the number of the S light beams. In front of the coupling lens, each P light beam corresponds to a P light spot, and each S light beam corresponds to an S light spot. The multiple P light spots are sequentially arranged side by side, and the S light spots are sequentially arranged side by side. Each S light spot corresponds to the corresponding P light spot, each S light spot is coincident with the corresponding P light spot, and the P light spots corresponding to the S light spots are adjacent. The optical fiber coupling semiconductor laser device has the high transmittance and the high coupling efficiency of a space light beam combining mode, and has the high light beam quality of a polarization multiplexing mode.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a fiber-coupled semiconductor laser. Background technique [0002] At present, there are two main methods to improve the coupling efficiency of fiber-coupled semiconductor lasers by using polarization multiplexing: first, to improve the polarization degree (linear polarization) of the output beam of the semiconductor laser chip (CoS); Transmittance of linearly polarized light. There are certain limitations in improving the coupling efficiency of fiber-coupled semiconductor lasers through the above two approaches. First of all, the polarization degree of the output beam of the semiconductor laser chip cannot be increased to 100%. In addition, every percentage point increase will require great effort and cost, and the waste heat after packaging will cause polarization degradation; on the other hand, the transmittance of polarized light to polarized light cannot reach 100%. The lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/06G02B6/42
Inventor 杨朝栋姜笑尘刘瑞何晓光
Owner BWT BEIJING
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