Fiber laser with high photoelectric conversion efficiency
A photoelectric conversion efficiency, fiber laser technology, applied in lasers, laser parts, phonon exciters, etc., to achieve the effect of flexible overall structure, improved pump absorption efficiency, and reliable industrial application
Active Publication Date: 2016-11-23
GW (SHANGHAI) LASER TECH CO LTD
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Problems solved by technology
[0020] The technical problem to be solved by the present invention is to provide a fiber laser with high photoelectric conversion efficiency in view of the above-mentioned technical problems brought by the existing optical fiber winding method to the fiber laser
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[0039] see Figure 8 , a fiber laser with high photoelectric conversion efficiency, including a bidirectionally pumped single-cavity laser module, the bidirectionally pumped single-cavity laser module consists of several forward pumping light sources 100, forward beam combiner 200, high reflection grating 300, gain Optical fiber 400, low reflection grating 500, reverse beam combiner 600, several reverse pump light sources 700 and output connector 800, wherein forward beam combiner 200, high reflection grating 300, gain fiber 400, low reflection grating 500, reflection The beam combiner 600 and the output connector 800 are sequentially connected through an optical path, each forward pumping light source 100 is connected to the forward beam combiner 200 through an optical path, and each reverse pumping light source 700 is connected to the reverse beam combiner 600 connected by optical path.
[0040] The gain fiber 400 is coiled on a reel in three areas, wherein the first area 4...
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The invention discloses a fiber laser with the high photoelectric conversion efficiency. The fiber laser comprises a two-way pumping single-cavity laser module. The two-way pumping single-cavity laser module is composed of a plurality of forward pumping light sources, a forward beam combiner, a high reflection optical grating, a gain fiber, a low reflection optical grating, a reverse beam combiner, a plurality of reverse pumping light sources and an output joint, wherein the forward beam combiner, the high reflection optical grating, the gain fiber, the low reflection optical grating, the reverse beam combiner and the output joint are sequentially connected through a light path, each forward pumping light source is connected with the forward beam combiner through a light path, and each reverse pumping light source is connected with the reverse beam combiner through a light path; the gain fiber is divided into three regions to be wound around a reel, the first, second and third regions are wound by adopting a circle, the second region is located on the periphery of the first region, and the third region is located on the periphery of the second region. The photoelectric conversion efficiency of the fiber laser with the high photoelectric conversion efficiency can reach up to 39.3%.
Description
technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a fiber laser with high photoelectric conversion efficiency. Background technique [0002] At present, kilowatt-level industrial lasers basically use non-polarization-maintaining large-field mode (LMA) fibers as their gain media. Large-scale fibers are characterized by relatively large core diameters and mode field diameters (MFD), so the threshold of nonlinear effects It is also correspondingly higher, and the coupling high-power pumping capability is also stronger. At the same time, in order to have better anti-strong reflection ability in the processing of various laser materials, basically all high-power industrial fiber lasers will use single-cavity modules (such as figure 1 shown) without using the structure of the main oscillator power amplifier. figure 1 The high-power industrial fiber laser module is composed of a pump light source 1, a beam combiner 2, a high ref...
Claims
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Login to View More IPC IPC(8): H01S3/067H01S3/091
CPCH01S3/06704H01S3/091
Inventor 丁建武刘进辉胡露绮沈国新方霞
Owner GW (SHANGHAI) LASER TECH CO LTD