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Semiconductor laser partially coherent beam combining system

A coherent beam combining and semiconductor technology, applied in semiconductor lasers, semiconductor laser devices, laser parts, etc., can solve problems such as poor quality of combined beam lasers, and achieve the effect of improving beam quality

Active Publication Date: 2021-04-16
SUZHOU EVERBRIGHT PHOTONICS +1
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the poor quality of beam combining lasers in the prior art

Method used

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  • Semiconductor laser partially coherent beam combining system

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Embodiment Construction

[0020] An embodiment of the present invention provides a semi-coherent beam combining system for semiconductor lasers, refer to figure 1 ,include:

[0021] The first semiconductor laser chip G 1 To the Nth semiconductor laser chip G n , the kth semiconductor laser chip G k The k-th laser is emitted, and the first laser to the N-th laser are space-combined to form a space-combined laser, N is an integer greater than or equal to 2, and k is greater than or equal to 1 and less than or equal to N;

[0022] An optical fiber 120, the incident end of the optical fiber 120 has a partially reflective film layer 121;

[0023] A focusing coupling mirror 130, the focusing coupling mirror 130 is adapted to couple the first laser to the Nth laser light in the spatially combined laser beams into the optical fiber 120, and the focusing coupling mirror 130 faces the incident end of the optical fiber 120 ;

[0024] The partially reflective film layer 121 reflects part of the kth laser ligh...

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Abstract

A semiconductor laser partial-coherence beam combination system comprises a first semiconductor laser chip to an N semiconductor laser chip, an optical fiber and a focusing coupling mirror; the k semiconductor laser chip emits k laser, the first laser to the N laser are subjected to space beam combination to form space beam combination laser, N is an integer larger than or equal to 2, and k is larger than or equal to 1 and smaller than or equal to N; the incident end of the optical fiber is provided with a partial reflection film layer; the focusing coupling mirror is suitable for coupling the first laser to the N laser in the space beam combined laser into the optical fiber; and the partial reflection film layer reflects part of the k laser, so that the reflected k laser is injected into the (N-k+1) semiconductor laser chip after passing through the focusing coupling mirror. The semiconductor laser partial-coherence beam combination system realizes partial coherence beam combination output, improves the light beam quality, and finally outputs the light beam through the optical fiber.

Description

technical field [0001] The invention relates to the field of semiconductors, in particular to a partially coherent beam combining system for semiconductor lasers. Background technique [0002] Due to its high electro-optical conversion efficiency, small size, high reliability and low price per watt, high-power semiconductor laser fiber-coupled modules are currently widely used in the pumping fields of fiber lasers and solid-state lasers. [0003] Semiconductor lasers usually need to be assembled into fiber-coupled modules through processes such as beam shaping, spatial beam combining, and fiber coupling before they can be applied in practice. Although the spatial beam combining can increase the output power, it sacrifices the beam quality. At the same time, due to the specific nature of the semiconductor laser itself, the output wavelength will drift with the temperature and current, which reduces the pumping efficiency. The above-mentioned shortcomings make the fiber-coup...

Claims

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Application Information

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IPC IPC(8): H01S5/40H01S5/028
Inventor 俞浩虞天成李泉灵王俊潘华东
Owner SUZHOU EVERBRIGHT PHOTONICS
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