A Fiber Laser with High Photoelectric Conversion Efficiency
A technology of photoelectric conversion efficiency and gain fiber, which is used in lasers, laser parts, phonon exciters, etc., to achieve the effect of flexible overall structure, compact overall structure and reliable industrial application.
Active Publication Date: 2022-05-17
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 900 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, and each forward pumping light source 100 is connected to the forward beam combiner 200 through an optical path, and each reverse pumping light source 900 and the gain fiber 400 are divided into three pieces The area is wound on a winding reel 700, wherein the first area 420, the second area 430, and the third a...
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Abstract
A fiber laser with high photoelectric conversion efficiency disclosed by the present invention comprises a bidirectionally pumped single-cavity laser module. , low reflection grating, reverse beam combiner, several reverse pumping light sources and output connectors, where the forward beam combiner, high reflection grating, gain fiber, low reflection grating, reverse beam combiner and output connector pass through the optical path in turn Each forward pump light source is connected to the forward beam combiner through an optical path, and each reverse pump light source is connected to the reverse beam combiner through an optical path; the gain fiber is divided into three areas and coiled in one On the reel, the first area, the second area, and the third area are wound in circles, the second area is located at the periphery of the first area, and the third area is located at the periphery of the second area. The electrical-optical conversion efficiency of the optical fiber laser with high photoelectric conversion efficiency of the present invention can be as high as 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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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